1. From the Department of Obstetrics & Gynecology, University Hospital Gasthuisberg, Katholieke Universiteit, Leuven; National Alliance of Christian Sickness Funds; Belgian Cancer Registry, Brussels; Obstetrics and Gynecology, Université Catholique de Louvain, Louvain-la-Neuve, Belgium; Department of Medical Oncology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands; Department of Obstetrics and Gynecology, Charles University, Prague, Czech Republic.