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.