Study of cardiac parasympathoautonomic regulation in men of different ages. International Journal of Biomedical and Advance Research, [S. l.], v. 7, n. 6, p. 274–277, 2016. DOI: 10.7439/ijbar.v7i6.3367. Disponível em: https://ssjournals.co.in/index.php/ijbar/article/view/3367. Acesso em: 13 mar. 2025.