Moraes, V. Y. de; Belloti, J. C.; Moraes, F. Y. de; Galbiatti, J. A.; Palácio, E. P.; Santos, J. B. G. dos; Faloppa, F. Hierarchy of Evidence Relating to Hand Surgery in Brazilian Orthopedic Journals. Sao Paulo Med J 2011, 129, 94-98.