1 Faculty of Medicine, Imperial College, London, United Kingdom. Electronic address: e.mcintosh@imperial.ac.uk.
2 University Children's Hospital, Charles University, Prague, Czech Republic; European Paediatric Association/Union of National European Paediatric Societies and Associations, Berlin, Germany.
3 European Paediatric Association/Union of National European Paediatric Societies and Associations, Berlin, Germany; Children's Hospital, Hannover Medical School, Hannover, Germany.
4 European Paediatric Association/Union of National European Paediatric Societies and Associations, Berlin, Germany; Institute of Pediatrics, University of Foggia, Istituto Di Ricovero e Cura a Carattere Scientifico "Casa Sollievo," Foggia, Italy.
5 European Paediatric Association/Union of National European Paediatric Societies and Associations, Berlin, Germany; Wolfson Medical Center, Holon, Israel; The Sackler School of Medicine, Tel Aviv, Israel.