About the Authors

Stefan Essig

Affiliation Institute of Social and Preventive Medicine (ISPM), University of Bern, Bern, Switzerland

Roderick Skinner

Affiliation Department of Pediatric and Adolescent Hematology/Oncology, and Children’s BMT Unit, Great North Children’s Hospital, Newcastle upon Tyne, United Kingdom

Nicolas X. von der Weid

Affiliation Pediatric Oncology/Hematology, University Children's Hospital Basel (UKBB), Basel, Switzerland

Claudia E. Kuehni

Affiliation Institute of Social and Preventive Medicine (ISPM), University of Bern, Bern, Switzerland

Gisela Michel

michel@ispm.unibe.ch

Affiliation Institute of Social and Preventive Medicine (ISPM), University of Bern, Bern, Switzerland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SE RS NXvdW CEK GM. Performed the experiments: SE CEK GM. Analyzed the data: SE CEK GM. Wrote the paper: SE RS NXvdW CEK GM.