Affiliations: Paediatric~Orthopedic Surgery, Hospital Universitari
Vall d'Hebron, Barcelona, Spain | Department of Orthopaedic Surgery, Temple University,
Philadelphia, PA, USA | Hand and Upper Extremity Surgery, Shriners Hospital
for Children, Philadelphia, PA, USA
Note:  Address for correspondence: Scott H. Kozin, MD, Shriners
Hospital for Children, 3551 North Broad Street, Philadelphia, PA 19140, USA.
Tel.: +1 215 430 4034; Fax: +1 215 430 4079; E-mail: [email protected]