1 Longitudinal assessment of lung function in Swiss childhood cancer survivors Rahel Kasteler MD PhD (https://orcid.org/0000-0002-0856-3436) 1,2 * Maria Otth MD PhD (https://orcid.org/0000-0002-2839-502X) 1,2,3 * Florian S Halbeisen PhD (https://orcid.org/0000-0003-2755-9501) 4,5 Luzius Mader PhD (https://orcid.org/0000-0001-5613-4356) 1 Florian Singer MD PhD (https://orcid.org/0000-0003-3471-5664) 6,7 Jochen Rössler MD (https://orcid.org/0000-0003-4022-4917) 8 Nicolas X von der Weid MD (https://orcid.org/0000-0002-9555-3817) 9 Marc Ansari MD (https://orcid.org/0000-0002-9649-6498) 10,11 Claudia E Kuehni MD (https://orcid.org/0000-0001-8957-2002) 1,12 ** 1 Institute of Social and Preventive Medicine, Univ-ersity of Bern, Bern, Switzerland. 2 Division of Oncology - Hematology, Department of Pediatrics, Kantonsspital Aarau, Aarau, Switzerland 3 Department of Oncology, Hematology, Immunology, Stem Cell Transplantation and Somatic Gene Therapy, University Children's Hospital Zurich – Eleonore Foundation, Zurich, Switzerland 4 Basel Institute for Clinical Epidemiology and Biostatistics, University Hospital Basel, Basel, Switzerland 5 University of Basel, Basel, Switzerland 6 Department of Respiratory Medicine, University Children’s Hospital Zurich and Childhood Research Center, Zurich, Switzerland 7 Division of Pediatric Pulmonology and Allergology, Department of Pediatrics and Adolescent Medicine, Medical University of Graz, Austria All rights reserved. No reuse allowed without permission. perpetuity. preprint (which was not certified by peer review) is the author/funder, who has granted medRxiv a license to display the preprint in The copyright holder for this this version posted March 16, 2022. ; https://doi.org/10.1101/2022.03.16.22272460 doi: medRxiv preprint NOTE: This preprint reports new research that has not been certified by peer review and should not be used to guide clinical practice.