[1]
W. . Y. Sihotang, E. . Girsang, S. . I.N. Silangit, and S. . A.F. Depari, “Implementation of Lean Management for Covid-19 Patient Services at Hospitals in Deli Serdang”, IJHP, vol. 3, no. 1, pp. 55–62, Aug. 2022.