Early biomarker response and patient preferences to oral and intramuscular vitamin B12 substitution in primary care: a randomised parallel-group trial. Swiss Medical Weekly, [S. l.], v. 147, n. 1314, p. w14421, 2017. DOI: 10.4414/smw.2017.14421. Disponível em: https://www.smw.ch/index.php/smw/article/view/2291. Acesso em: 4 nov. 2025.