C. . Kemdirim, A. . Uduak, N. . Opurum, D. Hart, and D. Ogaji, “Time-Flow Study for Receipt of Outpatient Services in Public and Private Hospitals: Implications for Lean Approach in Health Facilities in Rivers State, Nigeria : https://doi.org/10.60787/NMJ-62-6-63”, Niger Med J, vol. 62, no. 6, pp. 325–333, May 2022.