RUSSO, V.; DE CRESCENZO, I.; AMMENDOLA, ET AL., E. Sympathovagal balance analysis in idiopathic postural orthostatictachycardia syndrome. Acta Biomedica Atenei Parmensis, Fidenza, Italy, v. 78, n. 2, p. 133–138, 2007. Disponível em: https://mattioli1885journals.com/index.php/actabiomedica/article/view/1916. Acesso em: 24 apr. 2026.