1. Faculty of Business Management and Social Sciences; University of Applied Sciences Osnabrück; Osnabrück
2. German Paediatric Pain Centre; Children's Hospital Datteln; Datteln
3. Witten/Herdecke University; Witten
4. Pediatric Diabetology and Endocrinology; Children's Hospital Datteln; Datteln
5. Pediatric Neurology; Children's Hospital Datteln; Datteln
6. Olgahospital Stuttgart; Stuttgart
7. Institute of Medical Biometrics and Epidemiology; Witten/Herdecke University; Witten Germany