Characteristics that influence the acceptance of pregnant women to participate in observational studies. Medical Journal of Zambia, [S. l.], v. 45, n. 4, p. 172–178, 2019. DOI: 10.55320/mjz.45.4.182. Disponível em: https://mjz.co.zm/index.php/mjz/article/view/182.. Acesso em: 22 dec. 2024.