Predictors of response and anti-TNF drugs comparative efficacy by Canhão Helena, Mourão Ana F, Martins Fernando, Santos Maria J, Silva Canas, Pereira Joaquim, Silva JA, Costa José, Araujo Domingos, Silva Candida, Simões Eugenia, Duarte Catia, Silva José Antonio P, Pimentel Fernando, Branco Jaime, Fonseca João E