title: Levels of evidence in plastic surgery: an analysis of resident involvement.
authors.affiliation: Institute of Plastic and Craniofacial Surgery, SOBRAPAR Hospital, Campinas, Sao Paulo, Brazil denadai.rafael@hotmail.com Institute of Plastic and Craniofacial Surgery, SOBRAPAR Hospital, Campinas, Sao Paulo, Brazil.
authors.forename: Rafael
authors.initials: R
authors.lastname: Denadai
authors.forename: Cassio Eduardo
authors.initials: CE
authors.lastname: Raposo-Amaral