Diana Monteiro1,2, Ricardo Horta1,2, José Amarante1,2, Álvaro Silva1, Pedro Silva1,2. 1. Department of Plastic Reconstructive Aesthetic Maxilofacial Surgery and Burn Unit, Centro Hospitalar de São João, Porto, Portugal. 2. Oporto University School of Medicine, Alameda Professor Hernâni Monteiro, Porto, Portugal.