SINHA, M. K.; SINHA, M.; USMANI, F. A study of the correlation between vitamin B12, folic acid and ferritin with thyroid hormones in hypothyroidism. International journal of health sciences, [S. l.], v. 6, n. S2, p. 6877–6884, 2022. DOI: 10.53730/ijhs.v6nS2.6715. Disponível em: https://sciencescholar.us/journal/index.php/ijhs/article/view/6715. Acesso em: 19 apr. 2026.