1. Faculty of Health Sciences and Medicine, University of Lucerne , Alpenquai 4, Lucerne 6005, Switzerland
2. Division of Hematology-Oncology, Children’s Hospital of Eastern Switzerland , Claudiusstrasse 6, St. Gallen 9006, Switzerland
3. Department of Oncology, University Children’s Hospital Zurich—Eleonore Foundation , Steinwiesstrasse 75, Zurich 8032, Switzerland
4. Department of Pediatrics, McMaster Children’s Hospital and McMaster University , 1200 Main St W, Hamilton, ON L8N 3Z5, Canada