Results of the Brazilian Osteosarcoma Treatment Group Studies III and IV: Prognostic Factors and Impact on Survival - Petrilli, Antônio Sérgio; Camargo, Beatriz de; Bruniera, Paula; Brunetto, Algemir Lunardi; Jesus-Garcia, Reynaldo; Camargo, Olavo Pires de; Pena, Walter; Péricles, Pedro; Davi, Alexandre; Próspero, José Donato de; Alves, Maria Teresa S.; Oliveira, Claudia Regina Gomes Cardim Mendes de; et al. (Journal of Clinical Oncology, 2006)