1 Department of Pediatrics, Hospital Pedro Hispano, Unidade Local de Saúde de Matosinhos, Portugal. Electronic address: anacatarina.freitas@ulsm.min-saude.pt.
2 Department of Pediatrics, Hospital Pedro Hispano, Unidade Local de Saúde de Matosinhos, Portugal.
3 Department of Orthopedics, Hospital Pedro Hispano, Unidade Local de Saúde de Matosinhos, Portugal.
4 Department of Neonatology, Hospital Pedro Hispano, Unidade Local de Saúde de Matosinhos, Portugal.