1. From the Pediatrics Department, Centro Materno-Infantil do Norte (CMIN) do Centro Hospitalar e Universitário de Santo António (CHUdSA), Porto, Portugal
2. Pediatrics Department, Centro Hospitalar Tâmega e Sousa (CHTS), Penafiel, Portugal
3. Orthopedics and Traumatology Department, Centro Hospitalar Tâmega e Sousa (CHTS), Penafiel, Portugal.