@article{article042646fd,
title   = {Class II treatment sucess rate in 2- and 4- premolar extraction protocols},
author = {Janson, Guilherme dos Reis Pereira and Brambilla, Adriana da Costa and Henriques, José Fernando Castanha and Freitas, Marcos Roberto de and Neves, Leniana Santos Neves},
year = {2004},
doi = {10.1016/j.ajodo.2003.04.013},
journal   = {American Journal of Orthodontics and Dentofacial Orthopedics}
}