NAHAR, Salsa Bill et al. Impact of Vitamin D supplementation on Heart Rate Variability in Vitamin D deficient Asthma COPD Overlap Syndrome patients: A Randomized Controlled Trial. Journal of Bangladesh Society of Physiologist, [S. l.], v. 15, n. 2, p. 98–107, 2020. DOI: 10.3329/jbsp.v15i2.50925. Disponível em: https://banglajol.info/index.php/JBSP/article/view/50925. Acesso em: 6 apr. 2025.