Heart rate variability as a biomarker in chronic chagas cardiomyopathy patients with or without concomitant digestive involvement, for prediction of rassi score risk classes
Authors: L Silva, H T Moreira, M M Oliveira, L S S Cintra, A Schmidt, H C Salgado, R Fazan Jr, R Tinos, A Rassi Jr, J A Marin-Neto