@article{articlefe632c59,
title   = {Soft-tissue treatment changes in Class II Division 1 malocclusion with and without extraction of maxillary premolars},
author = {Janson, Guilherme dos Reis Pereira and Fuziy, Acácio and Freitas, Marcos Roberto de and Henriques, José Fernando Castanha and Almeida, Renato Rodrigues de},
year = {2007},
doi = {10.1016/j.ajodo.2007.05.012},
journal   = {American Journal of Orthodontics and Dentofacial Orthopedics}
}