Amorim, Dalmo de Souza, and José Antonio Marin Neto. “Functional Alterations of the Autonomic Nervous System in Chagas’ Heart Disease”. São Paulo Medical Journal 113, no. 2 (March 3, 1995): 772–784. Accessed March 15, 2025. https://periodicosapm.emnuvens.com.br/spmj/article/view/1656.