1 Plastic Surgery Division, Hospital São Lucas (HSL) - Pontifical Catholic University of Rio Grande do Sul (PUCRS), Clínica Cheffe - Alameda Major Francisco Barcelos 76, Boa Vista, Porto Alegre, RS, 91340-390, Brazil. marcelo@cheffe.com.br.
2 Plastic Surgery Division, Hospital São Lucas - PUCRS, Porto Alegre, Brazil.
3 Department of Plastic and Craniomaxillofacial Surgery, Hospital de Clínicas de Porto Alegre, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
4 Division of Hand Surgery and Reconstructive Microsurgery, Hospital São Lucas, School of Medicine - PUCRS, Porto Alegre, Brazil.