PJMD, A. Frequency of Regular Voluntary Blood Donors and Factors Associated with Blood Donation in Karachi, Pakistan. Pakistan Journal of Medicine and Dentistry, [S. l.], v. 9, n. 2, p. 98–103, 2020. Disponível em: http://ojs.zu.edu.pk/ojs/index.php/pjmd/article/view/466. Acesso em: 3 may. 2024.