IGBOAMALU, C.; OGAJI, D. Knowledge, Attitude, and Practice of Patient Referral among Patent and Proprietary Medicine Vendors in Obio-Akpor, Rivers State. Nigerian Medical Journal, [S. l.], v. 65, n. 4, p. 443–455, 2024. DOI: 10.60787/nmj.v65i4.417. Disponível em: https://www.nigerianmedjournal.org/index.php/nmj/article/view/417. Acesso em: 23 apr. 2026.