K., G. J.; DOND, P. T.; S., R. V.; MUGADLIMATH, A. B. Study of electrocardiographic patterns in clinically normal persons above sixty years of age. International Journal of Advances in Medicine, [S. l.], v. 2, n. 3, p. 211–217, 2017. DOI: 10.18203/2349-3933.ijam20150546. Disponível em: https://www.ijmedicine.com/index.php/ijam/article/view/352. Acesso em: 18 apr. 2026.