GINTING, Dicky Owenta; GIRSANG , Ermi; SIREGAR, Santy deasy. The Effect of Lean Management Implementing in an Efforts to Improve Operational Efficiency in the Emergency Department and Inpatient Units at Royal Prima Hospital, Medan. . PROFESSIONAL HEALTH JOURNAL, [S. l.], v. 8, n. 1, p. 238–248, 2026. DOI: 10.54832/phj.v8i1.1390. Disponível em: https://www.ojsstikesbanyuwangi.com/index.php/PHJ/article/view/1390. Acesso em: 19 jan. 2026.