Vitamin B12 deficiency and sublingual and intramuscular treatment: case report . Research, Society and Development, [S. l.], v. 11, n. 17, p. e62111738863, 2022. DOI: 10.33448/rsd-v11i17.38863. Disponível em: https://ojs34.rsdjournal.org/index.php/rsd/article/view/38863. Acesso em: 28 jun. 2025.