Analysis of the Effect of Marketing Mix 9p on Revisit Interest of Outpatient Patients at Metta Medika Hospital in Padangsidimpuan City. Research of Service Administration Health and Sains Healthys, [S. l.], v. 7, n. 1, 2026. DOI: 10.58258/rehat.v7i1.10332. Disponível em: https://ejournal.mandalanursa.org/index.php/Rehat/article/view/10332. Acesso em: 18 jun. 2026.