Neves, B. C. das; Bacilio, M. L.; Berrueta, L.; Salmen, S.; Peterson, D. L.; Donis, J. H.; Nuñez, T. J.; Davila, D. F. Muscarinic Antibodies and Heart Rate Responses to Dynamic Exercise and to the Valsalva Maneuver in Chronic Chagasic Patients . Rev. Inst. Med. Trop. São Paulo 2013, 55 (1), 31-37.