Moraes, V. Y. de, J. C. Belloti, F. Faloppa, and M. Bhandari. “Collaborative Multicenter Trials in Latin America: Challenges and Opportunities in Orthopedic and Trauma Surgery”. São Paulo Medical Journal, vol. 131, no. 3, May 2013, pp. 187-92, https://periodicosapm.emnuvens.com.br/spmj/article/view/1304.