1. Laboratory of Microsurgery and Plastic Surgery (LIM-04), School of Medicine; Universidade de São Paulo; São Paulo Brazil
2. Nottingham China Health Institute; The University of Nottingham Ningbo; Ningbo China
3. Department of Specialised Medicine, Discipline of Dermatology; Universidade Federal do Piaui; Teresina Brazil
4. Department of Surgery, Discipline of Plastic Surgery; Universidade de São Paulo; São Paulo Brazil
5. c/o Cochrane Skin Group; The University of Nottingham; Nottingham UK
6. Institute for Health Research; University of Notre Dame Australia; Fremantle Australia
7. School of Population and Global Health; The University of Western Australia; Perth Australia
8. Division of Surgery and Interventional Science; University College London; London UK
9. Cochrane Brazil Rio de Janeiro; Cochrane; Petrópolis Brazil