Affiliations

• ¹ Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland; CANSEARCH Research Platform in Pediatric Oncology and Haematology, University of Geneva, Geneva, Switzerland. Electronic address: sven.strebel@ispm.unibe.ch.
• ² Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland; CANSEARCH Research Platform in Pediatric Oncology and Haematology, University of Geneva, Geneva, Switzerland.
• ³ Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland; Division of Pediatric Hematology/Oncology, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.