M Ruiz1, O Garcia, I Hernán, J Sancho, J Serracanta, J P Barret. 1. Department of Plastic, Aesthetic and Reconstructive Surgery and Burn Center, Vall d'Hebron University Hospital, Autonomous University of Barcelona, Passeig de la Vall d'Hebron 119-129, 08025 Barcelona, Spain. mireia.ruizcastilla1@gmail.com