1 Faculty of Medicine, Department of Pediatrics and Adolescent Medicine, Division of Pediatric Hematology and Oncology, Medical Centre, University of Freiburg, Freiburg, Germany.
2 Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
3 Spemann Graduate School of Biology and Medicine, University of Freiburg, Freiburg, Germany.
4 Faculty of Biology, University of Freiburg, Freiburg, Germany.
5 Faculty of Medicine, Department of Rheumatology and Clinical Immunology, Medical Centre, University of Freiburg, Freiburg, Germany.
6 Department of Pediatrics, University of Bern, Bern, Switzerland.
7 Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.
8 CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria.
9 Department of Pediatric Hematology and Oncology, Children's Hospital, University of Cologne, Cologne, Germany.
10 Department of Medical Genetics, Biozentrum, University of Wuerzburg, Wuerzburg, Germany.
11 Telomere Replication and Stability Group, MRC London Institute of Medical Sciences (LMS), London, United Kingdom.
12 Institute for Transfusion Medicine, Institute for Clinical Transfusion Medicine and Immunogenetics Ulm, German Red Cross Blood Service Baden-Wuerttemberg - Hessen, University Ulm, Ulm, Germany.
13 Department of Human Genetics, Hannover Medical School, Hannover, Germany.
14 Department of Pediatric Hematology and Oncology, Justus Liebig-University, Giessen, Germany.
15 Clinic of Pediatric Hematology and Oncology, University Medical Center Hamburg Eppendorf, Hamburg, Germany.
17 Faculty of Medicine, Institute of Pathology, Medical Center, University of Freiburg, Freiburg, Germany.
18 German Cancer Consortium (DKTK), Freiburg, Germany.
19 German Cancer Research Center (DKFZ), Heidelberg, Germany.
20 Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria.
21 Department of Pediatrics and Adolescent Medicine, St. Anna Kinderspital and Children's Cancer Research Institute, Medical University of Vienna, Vienna, Austria.