1University of Frankfurt, Germany
2Children’s Hospital of Philadelphia, PA, USA
3Children’s Hospital, Gutierrez, Argentine Treatment Group of Acute Leukemias GATLA, Argentina, Buenos Aires
4Hospital Niño Jesús, Madrid, Spain
5Azienda Ospedaliero-Universitaria Meyer, Florence, Italy
6Medical University, Lublin, Poland
7Royal Marsden Hospital, Sutton, UK
8The Hospital for Sick Children, Toronto, Canada
*The SIOP Supportive Care Working Group involved in this survey consisted of Roland A. Ammann (Switzerland), Richard Aplenc (USA), Andishe Attarbaschi (Austria), Diana Averbuch (Israel), André Baruchel (France), Désirée Caselli (Italy), Julia Chisholm (United Kingdom), Peter Downie (Australia), Andreas H. Groll (Germany), Henrik Hasle (Denmark), Jesper Heldrup (Sweden), Jerzy Kowalczyk (Poland), Alvaro Lassaletta (Spain), Thomas Lehrnbecher (Germany), Marleen Renard (Belgium), Fernanda Rivas Pereira (Argentina), Jane Skeen (New Zealand), Jan Stary (Czech Republic), Lillian Sung (Canada), Wim Tissing (Netherlands), Athanasios Tragiannidis (Greece), Manickavalli Vaithilingum (South Africa), and Theo Zaoutis (USA)