ALHARKAN, D. H.; ALTOWAYAN, R. M. A.; ALHARBI, A. M.; ALJUMAIAH, S. M.; ALHIJJI, L. I.; ALKHEZZY, B. S. B. Pattern of ophthalmic referral from primary healthcare centres to secondary and tertiary hospitals in Qassim Province, Saudi Arabia. International Surgery Journal, [S. l.], v. 7, n. 6, p. 1763–1767, 2020. DOI: 10.18203/2349-2902.isj20202379. Disponível em: https://www.ijsurgery.com/index.php/isj/article/view/6111. Acesso em: 8 nov. 2025.