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  • 1
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    Isolation of single human hematopoietic stem cells capable of long-term multilineage engraftment (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-07-09
    Description: Lifelong blood cell production is dependent on rare hematopoietic stem cells (HSCs) to perpetually replenish mature cells via a series of lineage-restricted intermediates. Investigating the molecular state of HSCs is contingent on the ability to purify HSCs away from transiently engrafting cells. We demonstrated that human HSCs remain infrequent, using current purification strategies based on Thy1 (CD90) expression. By tracking the expression of several adhesion molecules in HSC-enriched subsets, we revealed CD49f as a specific HSC marker. Single CD49f(+) cells were highly efficient in generating long-term multilineage grafts, and the loss of CD49f expression identified transiently engrafting multipotent progenitors (MPPs). The demarcation of human HSCs and MPPs will enable the investigation of the molecular determinants of HSCs, with a goal of developing stem cell-based therapeutics.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Notta, Faiyaz -- Doulatov, Sergei -- Laurenti, Elisa -- Poeppl, Armando -- Jurisica, Igor -- Dick, John E -- Canadian Institutes of Health Research/Canada -- New York, N.Y. -- Science. 2011 Jul 8;333(6039):218-21. doi: 10.1126/science.1201219.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Stem Cell and Developmental Biology, Campbell Family Institute for Cancer Research/Ontario Cancer Institute, Toronto, Ontario, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21737740" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD34/analysis ; Antigens, Thy-1/analysis ; *Cell Lineage ; Cell Proliferation ; *Cell Separation ; Coculture Techniques ; Fetal Blood/cytology ; Flow Cytometry ; Gene Expression Profiling ; Hematopoiesis ; *Hematopoietic Stem Cell Transplantation ; Hematopoietic Stem Cells/cytology/immunology/*physiology ; Humans ; Integrin alpha6/analysis ; Mice ; Mice, Inbred NOD ; Multipotent Stem Cells/cytology/immunology/*physiology ; Stromal Cells/cytology/physiology ; Transplantation, Heterologous
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    The genetic basis of early T-cell precursor acute lymphoblastic leukaemia (2012)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2012-01-13
    Description: Early T-cell precursor acute lymphoblastic leukaemia (ETP ALL) is an aggressive malignancy of unknown genetic basis. We performed whole-genome sequencing of 12 ETP ALL cases and assessed the frequency of the identified somatic mutations in 94 T-cell acute lymphoblastic leukaemia cases. ETP ALL was characterized by activating mutations in genes regulating cytokine receptor and RAS signalling (67% of cases; NRAS, KRAS, FLT3, IL7R, JAK3, JAK1, SH2B3 and BRAF), inactivating lesions disrupting haematopoietic development (58%; GATA3, ETV6, RUNX1, IKZF1 and EP300) and histone-modifying genes (48%; EZH2, EED, SUZ12, SETD2 and EP300). We also identified new targets of recurrent mutation including DNM2, ECT2L and RELN. The mutational spectrum is similar to myeloid tumours, and moreover, the global transcriptional profile of ETP ALL was similar to that of normal and myeloid leukaemia haematopoietic stem cells. These findings suggest that addition of myeloid-directed therapies might improve the poor outcome of ETP ALL.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3267575/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3267575/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Jinghui -- Ding, Li -- Holmfeldt, Linda -- Wu, Gang -- Heatley, Sue L -- Payne-Turner, Debbie -- Easton, John -- Chen, Xiang -- Wang, Jianmin -- Rusch, Michael -- Lu, Charles -- Chen, Shann-Ching -- Wei, Lei -- Collins-Underwood, J Racquel -- Ma, Jing -- Roberts, Kathryn G -- Pounds, Stanley B -- Ulyanov, Anatoly -- Becksfort, Jared -- Gupta, Pankaj -- Huether, Robert -- Kriwacki, Richard W -- Parker, Matthew -- McGoldrick, Daniel J -- Zhao, David -- Alford, Daniel -- Espy, Stephen -- Bobba, Kiran Chand -- Song, Guangchun -- Pei, Deqing -- Cheng, Cheng -- Roberts, Stefan -- Barbato, Michael I -- Campana, Dario -- Coustan-Smith, Elaine -- Shurtleff, Sheila A -- Raimondi, Susana C -- Kleppe, Maria -- Cools, Jan -- Shimano, Kristin A -- Hermiston, Michelle L -- Doulatov, Sergei -- Eppert, Kolja -- Laurenti, Elisa -- Notta, Faiyaz -- Dick, John E -- Basso, Giuseppe -- Hunger, Stephen P -- Loh, Mignon L -- Devidas, Meenakshi -- Wood, Brent -- Winter, Stuart -- Dunsmore, Kimberley P -- Fulton, Robert S -- Fulton, Lucinda L -- Hong, Xin -- Harris, Christopher C -- Dooling, David J -- Ochoa, Kerri -- Johnson, Kimberly J -- Obenauer, John C -- Evans, William E -- Pui, Ching-Hon -- Naeve, Clayton W -- Ley, Timothy J -- Mardis, Elaine R -- Wilson, Richard K -- Downing, James R -- Mullighan, Charles G -- CA114766/CA/NCI NIH HHS/ -- CA98413/CA/NCI NIH HHS/ -- CA98543/CA/NCI NIH HHS/ -- P30 CA021765/CA/NCI NIH HHS/ -- P30 CA021765-33/CA/NCI NIH HHS/ -- P30CA021765/CA/NCI NIH HHS/ -- U01GM92666/GM/NIGMS NIH HHS/ -- U54 HG003079/HG/NHGRI NIH HHS/ -- England -- Nature. 2012 Jan 11;481(7380):157-63. doi: 10.1038/nature10725.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Computational Biology and Bioinformatics, St Jude Children's Research Hospital, Memphis, Tennessee 38105, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22237106" target="_blank"〉PubMed〈/a〉
    Keywords: Age of Onset ; Child ; DNA Copy Number Variations/genetics ; Genes, ras/genetics ; Genetic Predisposition to Disease/*genetics ; Genome, Human/genetics ; Genomics ; Hematopoiesis/genetics ; Histones/metabolism ; Humans ; Janus Kinases/genetics/metabolism ; Leukemia, Myeloid, Acute/drug therapy/genetics/pathology ; Molecular Sequence Data ; Mutation/*genetics ; Precursor T-Cell Lymphoblastic Leukemia-Lymphoma/drug therapy/*genetics/pathology ; Receptors, Interleukin-7/genetics ; Sequence Analysis, DNA ; Signal Transduction/genetics ; Stem Cells/metabolism/pathology ; T-Lymphocytes/metabolism/pathology ; Translocation, Genetic/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 3
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    The unfolded protein response governs integrity of the haematopoietic stem-cell pool during stress (2014)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2014-04-30
    Description: The blood system is sustained by a pool of haematopoietic stem cells (HSCs) that are long-lived due to their capacity for self-renewal. A consequence of longevity is exposure to stress stimuli including reactive oxygen species (ROS), nutrient fluctuation and DNA damage. Damage that occurs within stressed HSCs must be tightly controlled to prevent either loss of function or the clonal persistence of oncogenic mutations that increase the risk of leukaemogenesis. Despite the importance of maintaining cell integrity throughout life, how the HSC pool achieves this and how individual HSCs respond to stress remain poorly understood. Many sources of stress cause misfolded protein accumulation in the endoplasmic reticulum (ER), and subsequent activation of the unfolded protein response (UPR) enables the cell to either resolve stress or initiate apoptosis. Here we show that human HSCs are predisposed to apoptosis through strong activation of the PERK branch of the UPR after ER stress, whereas closely related progenitors exhibit an adaptive response leading to their survival. Enhanced ER protein folding by overexpression of the co-chaperone ERDJ4 (also called DNAJB9) increases HSC repopulation capacity in xenograft assays, linking the UPR to HSC function. Because the UPR is a focal point where different sources of stress converge, our study provides a framework for understanding how stress signalling is coordinated within tissue hierarchies and integrated with stemness. Broadly, these findings reveal that the HSC pool maintains clonal integrity by clearance of individual HSCs after stress to prevent propagation of damaged stem cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉van Galen, Peter -- Kreso, Antonija -- Mbong, Nathan -- Kent, David G -- Fitzmaurice, Timothy -- Chambers, Joseph E -- Xie, Stephanie -- Laurenti, Elisa -- Hermans, Karin -- Eppert, Kolja -- Marciniak, Stefan J -- Goodall, Jane C -- Green, Anthony R -- Wouters, Bradly G -- Wienholds, Erno -- Dick, John E -- 100140/Wellcome Trust/United Kingdom -- 19639/Arthritis Research UK/United Kingdom -- 201592/Canadian Institutes of Health Research/Canada -- G1002610/Medical Research Council/United Kingdom -- Arthritis Research UK/United Kingdom -- Cancer Research UK/United Kingdom -- Medical Research Council/United Kingdom -- England -- Nature. 2014 Jun 12;510(7504):268-72. doi: 10.1038/nature13228. Epub 2014 Apr 28.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario M5G 2M9, Canada [2] Department of Molecular Genetics, University of Toronto, Toronto, Ontario M5S 1A8, Canada. ; Cambridge Institute for Medical Research, Wellcome Trust/MRC Stem Cell Institute and Department of Haematology, University of Cambridge, Cambridge CB2 0XY, UK. ; Department of Medicine, School of Clinical Medicine, Addenbrookes Hospital, University of Cambridge, Cambridge CB2 0QQ, UK. ; Cambridge Institute for Medical Research, Wellcome Trust/MRC Stem Cell Institute and Department of Medicine, University of Cambridge, Cambridge CB2 0XY, UK. ; Department of Pediatrics, McGill University and the Research Institute of the McGill University Health Centre, Westmount, Quebec H3Z 2Z3, Canada. ; Departments of Radiation Oncology and Medical Biophysics, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario M5G 2M9, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24776803" target="_blank"〉PubMed〈/a〉
    Keywords: Activating Transcription Factor 4/metabolism ; Animals ; Apoptosis/drug effects ; *Endoplasmic Reticulum Stress/drug effects ; Eukaryotic Initiation Factor-2/metabolism ; HSP40 Heat-Shock Proteins/metabolism ; Hematopoietic Stem Cells/*cytology/drug effects ; Heterografts ; Humans ; Male ; Membrane Proteins/metabolism ; Mice ; Molecular Chaperones/metabolism ; Protein Folding ; Protein Phosphatase 1/metabolism ; Signal Transduction ; Transcription Factor CHOP/metabolism ; Tunicamycin/pharmacology ; Unfolded Protein Response/drug effects/*physiology ; eIF-2 Kinase/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 4
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    A KRAB/KAP1-miRNA cascade regulates erythropoiesis through stage-specific control of mitophagy (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-03-16
    Description: During hematopoiesis, lineage- and stage-specific transcription factors work in concert with chromatin modifiers to direct the differentiation of all blood cells. We explored the role of KRAB-containing zinc finger proteins (KRAB-ZFPs) and their cofactor KAP1 in this process. In mice, hematopoietic-restricted deletion of Kap1 resulted in severe hypoproliferative anemia. Kap1-deleted erythroblasts failed to induce mitophagy-associated genes and retained mitochondria. This was due to persistent expression of microRNAs (miRNAs) targeting mitophagy transcripts, itself secondary to a lack of repression by stage-specific KRAB-ZFPs. The KRAB/KAP1-miRNA regulatory cascade is evolutionarily conserved, as it also controls mitophagy during human erythropoiesis. Thus, a multilayered transcription regulatory system is present, in which protein- and RNA-based repressors are superimposed in combinatorial fashion to govern the timely triggering of an important differentiation event.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3678075/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3678075/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barde, Isabelle -- Rauwel, Benjamin -- Marin-Florez, Ray Marcel -- Corsinotti, Andrea -- Laurenti, Elisa -- Verp, Sonia -- Offner, Sandra -- Marquis, Julien -- Kapopoulou, Adamandia -- Vanicek, Jiri -- Trono, Didier -- 268721/European Research Council/International -- New York, N.Y. -- Science. 2013 Apr 19;340(6130):350-3. doi: 10.1126/science.1232398. Epub 2013 Mar 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Life Sciences and Frontiers in Genetics Program, Ecole Polytechnique Federale de Lausanne, 1015 Lausanne, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23493425" target="_blank"〉PubMed〈/a〉
    Keywords: Anemia/genetics ; Animals ; Autophagy/*genetics ; Erythroblasts/*metabolism/ultrastructure ; Erythropoiesis/*genetics ; Female ; Male ; Membrane Proteins/metabolism ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; MicroRNAs/genetics/*metabolism ; Mitochondria/genetics/*physiology ; Mitochondrial Proteins/metabolism ; Nuclear Proteins/genetics/*metabolism ; Repressor Proteins/genetics/*metabolism ; Transcription Factors/*metabolism ; *Zinc Fingers
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    Distinct routes of lineage development reshape the human blood hierarchy across ontogeny (2015)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2015-11-07
    Description: In a classical view of hematopoiesis, the various blood cell lineages arise via a hierarchical scheme starting with multipotent stem cells that become increasingly restricted in their differentiation potential through oligopotent and then unipotent progenitors. We developed a cell-sorting scheme to resolve myeloid (My), erythroid (Er), and megakaryocytic (Mk) fates from single CD34(+) cells and then mapped the progenitor hierarchy across human development. Fetal liver contained large numbers of distinct oligopotent progenitors with intermingled My, Er, and Mk fates. However, few oligopotent progenitor intermediates were present in the adult bone marrow. Instead, only two progenitor classes predominate, multipotent and unipotent, with Er-Mk lineages emerging from multipotent cells. The developmental shift to an adult "two-tier" hierarchy challenges current dogma and provides a revised framework to understand normal and disease states of human hematopoiesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Notta, Faiyaz -- Zandi, Sasan -- Takayama, Naoya -- Dobson, Stephanie -- Gan, Olga I -- Wilson, Gavin -- Kaufmann, Kerstin B -- McLeod, Jessica -- Laurenti, Elisa -- Dunant, Cyrille F -- McPherson, John D -- Stein, Lincoln D -- Dror, Yigal -- Dick, John E -- Canadian Institutes of Health Research/Canada -- Medical Research Council/United Kingdom -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2016 Jan 8;351(6269):aab2116. doi: 10.1126/science.aab2116. Epub 2015 Nov 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, Ontario, Canada. Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada. ; Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, Ontario, Canada. ; Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada. Ontario Institute for Cancer Research, Toronto, Ontario, Canada. ; Wellcome Trust, Medical Research Council Cambridge Stem Cell Institute, Department of Haematology, University of Cambridge, Cambridge, UK. ; Ecole Polytechnique Federale de Lausanne, LMC, Station 12, Lausanne, CH-1015, Switzerland. ; Medical Biophysics, University of Toronto, Toronto, Ontario, Canada. Ontario Institute for Cancer Research, Toronto, Ontario, Canada. ; The Hospital for Sick Children Research Institute, University of Toronto, Ontario, Canada. ; Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, Ontario, Canada. Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada. jdick@uhnres.utoronto.ca.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26541609" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Antigens, CD34/analysis ; Cell Lineage/genetics/*physiology ; Cell Separation ; Cells, Cultured ; Erythroid Cells/*cytology ; Fetal Blood/cytology ; Gene Expression Profiling ; Hematopoiesis/genetics/*physiology ; Humans ; Liver/cytology/embryology ; Megakaryocyte Progenitor Cells/*cytology ; Megakaryocytes/*cytology ; Multipotent Stem Cells/cytology ; Myeloid Cells/*cytology ; Transcription, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
    Electronic Resource
    Electronic Resource
    A study of Roman glass by reflectance and electron paramagnetic resonance spectroscopies
    Amsterdam : Elsevier
    Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Section 49 (1993), S. 1361-1371 
    Details
    ISSN: 0584-8539
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0584-8539(93)80043-A
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  • 7
    Electronic Resource
    Electronic Resource
    Oxidation of catechols and catecholamines by horseradish peroxidase and lactoperoxidase: ESR spin stabilization approach combined with optical methods
    Amsterdam : Elsevier
    Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Section 49 (1993), S. 1261-1267 
    Details
    ISSN: 0584-8539
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0584-8539(93)80034-8
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  • 8
    Electronic Resource
    Electronic Resource
    Electron paramagnetic resonance studies on VO(IV)-D-aspartic acid and VO(IV)-D-aspartic acid α-benzylester complexes
    Amsterdam : Elsevier
    Journal of Inorganic Biochemistry 45 (1992), S. 21-30 
    Details
    ISSN: 0162-0134
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0162-0134(92)84037-N
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  • 9
    Electronic Resource
    Electronic Resource
    EPR studies on the interaction of lactoperoxidase with endogenous and exogenous anions.
    Amsterdam : Elsevier
    Journal of Inorganic Biochemistry 51 (1993), S. 251 
    Details
    ISSN: 0162-0134
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0162-0134(93)85285-G
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  • 10
    Electronic Resource
    Electronic Resource
    Characterization and reactivity of the principal anionic and cationic isoenzymes of ''zucchini'' peroxidases
    Amsterdam : Elsevier
    Journal of Inorganic Biochemistry 43 (1991), S. 340 
    Details
    ISSN: 0162-0134
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0162-0134(91)84327-6
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