Using Web-Based and Paper-Based Questionnaires for Collecting Data on Fertility Issues Among Female Childhood Cancer Survivors: Differences in Response Characteristics

Marleen H. van den Berg   ¹ , PhD ;   Annelies Overbeek   ^{1, 2} , MD, PhD Candidate ;   Helena J. van der Pal   ³ , MD ;   A. Birgitta Versluys   ⁴ , MD ;   Dorine Bresters   ⁵ , MD, PhD ;   Flora E. van Leeuwen   ⁶ , PhD ;   Cornelis B. Lambalk   ² , MD, PhD ;   Gertjan J.L. Kaspers   ¹ , MD, PhD ;   Eline van Dulmen-den Broeder   ¹ , PhD

¹ VU University Medical Center Amsterdam, Department of Pediatrics, division of Oncology-Hematology, Amsterdam, Netherlands

² VU University Medical Center, Department of Obstetrics & Gynaecology, Amsterdam, Netherlands

³ Emma Children’s Hospital/ Academic Medical Center, Department of Pediatric Oncology and Medical Oncology, Amsterdam, Netherlands

⁴ University Medical Center Utrecht/Wilhelmina Children's Hospital, Department of Pediatric Hematology/Immunology and Bone Marrow Transplantation, Utrecht, Netherlands

⁵ Leiden University Medical Center, Willem-Alexander Children’s Hospital, Leiden, Netherlands

⁶ Netherlands Cancer Institute, Department of Epidemiology, Amsterdam, Netherlands