Correspondence should be sent to Cristina Alves, MD MSc FEBOT, Department of Pediatric Orthopaedics – Hospital Pediátrico – CHUC, EPE Avenida Afonso Romão, 3000-602 Coimbra, Portugal. E-mail:

E-mail Address: [email protected]

Department of Pediatric Orthopaedics - Hospital Pediátrico - CHUC, EPE, Coimbra, Portugal.