A study on cyanocobalamin insufficiency. International Journal of Research in Pharmacology & Pharmacotherapeutics, [S. l.], v. 13, n. 4, p. 466–469, 2024. DOI: 10.61096/ijrpp.v13.iss4.2024.466-469. Disponível em: https://www.ijrpp.com/ijrpp/article/view/578. Acesso em: 18 apr. 2026.