Dias, R. M., C. Stabile, P. Dotto, and J. R. Jardim. “Intermittent Negative Pressure Ventilation May Increase Urine Flow in Normal Subjects”. São Paulo Medical Journal, vol. 112, no. 2, Apr. 1994, pp. 551-4, https://periodicosapm.emnuvens.com.br/spmj/article/view/761.