1. Sant Joan de Déu Children's Hospital, University of Barcelona, Passeig Sant Joan de Déu, no. 2, 08950, Esplugues de Llobregat, Barcelona, Spain
2. Hand and Congenital Pathology Division, Department of Paediatrics Orthopaedics, University Sant Joan de Déu Children's Hospital, Barcelona, Spain
3. Department of Histology, University Sant Joan de Déu Children's Hospital, Barcelona, Spain
4. Laboratory of Genetics, University Sant Joan de Déu Children's Hospital, Barcelona, Spain
5. Department of Dermatology, University Sant Joan de Déu Children's Hospital, Barcelona, Spain