Aguilar-Nascimento, J. E. de, J. G. Marra, N. Slhessarenko, and C. J. F. Fontes. “Efficacy of National Nosocomial Infection Surveillance Score, Acutphase Proteins, and Interleukin-6 for Predicting Postoperative Infections Following Major Gastrointestinal Surgery”. São Paulo Medical Journal, vol. 125, no. 1, Jan. 2007, pp. 34-41, https://periodicosapm.emnuvens.com.br/spmj/article/view/2058.