PREVALENCE AND SPECTRUM OF IRON DEFICIENCY IN HEART FAILURE PATIENTS IN TAMIL NADU. INTERNATIONAL JOURNAL OF ADVANCED RESEARCH AND REVIEW (IJARR), [S. l.], v. 6, n. 3, p. 30–37, 2021. Disponível em: https://www.ijarr.org/index.php/ijarr/article/view/364.. Acesso em: 30 may. 2026.