1. Neurosurgery Department, Garcia de Orta Hospital, Avenida Torrado da Silva, 2801-951 Almada, Portugal
2. Orthopedic Department, Beatriz Ângelo Hospital, Avenida Carlos Teixeira, 2674-514 Loures, Portugal
3. General Surgery Department, CUF Infante Santo Hospital, Travessa do Castro, 1350-070 Lisbon, Portugal
4. General Surgery Department, Garcia de Orta Hospital, Avenida Torrado da Silva, 2801-951 Almada, Portugal
5. Plastic and Reconstructive Surgery Department, Garcia de Orta Hospital, Avenida Torrado da Silva, 2801-951 Almada, Portugal