Cox proportion hazard model for patients with hepatitis disease in Iraq. Baghdad Science Journal, Iraq, Baghdad, v. 6, n. 3, p. 612–617, 2009. DOI: 10.21123/bsj.2009.6.3.612-617. Disponível em: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/1023.. Acesso em: 21 may. 2024.