University of Cologne, Cologne, Germany
Monash Medical Centre, Clayton, Victoria, Australia
University Clinic of Cologne, Cologne, Germany
Tauranga Hospital, Tauranga, Bay Of Plenty, New Zealand
Children's Hospital University of Cologne, Cologne, Germany
Infektionsmedizinisches Zentrum Hamburg, Hamburg, Germany
Vivantes Auguste Victoria Klinikum, Berlin, Germany
Ärzteforum Seestrasse, Berlin, Germany
1st Dept. of Medicine, Cologne University Hospital, Cologne, Germany
Buda Health Center, Budapest, Hungary
Hospital Clinical de Barcelona & Clinical Corachan, Barcelona, Spain
Fundacio Hospital Universitari Vall d'Hebron, Barcelona, Spain
A. I. duPont Hospital for Children, Wilmington, Delaware, United States
Nemours Children's Clinic, Pensacola, Florida, United States
Medical University of South Carolina, Charleston, South Carolina, United States
University Hospital Praha Motol, Praha, Czech Republic
University of Calgary - Alberta Children's Hospital, Calgary, Canada
Hospital de Niños Ricardo Gutiérrez, Buenos Aires, Argentina
LVR Clinic Cologne - Academic Clinic of the University of Cologne, Cologne, Germany
Children´s Hospital University of Cologne, Cologne, NRW, Germany