SIAHAAN, S. C. P. KEHAMILAN DENGAN COVID – 19. Prosiding FK UC, [S. l.], v. 1, n. 1, p. 28, 2022. Disponível em: https://journal.uc.ac.id/index.php/PFK2021/article/view/2576. Acesso em: 6 oct. 2024.