1. Pediatric Hand Surgery and Microsurgery Unit Barcelona University Children's Hospital HM Nens, HM Hospitales Barcelona Spain
2. Department of Orthopedic Surgery Hospital Germans Trias Barcelona Spain
3. Hand Surgery Unit, Department of Orthopedics Deixeus Hospital Barcelona Spain
4. Pediatric orthopedics department Sant Pau Hospital Barcelona Spain
5. Hand Surgery Unit, Department of Orthopedics Hospital Universitario Marques de Valdecilla Santander Spain
6. Pediatric Hand Surgery and Microsurgery Unit Joe DiMaggio Children's Hospital Hollywood Florida USA