Tamarina, F.A. et al. 2026. Efficiency of Inpatient Care Services at Surabaya Islamic Hospital in 2022-2023 Using the Barber-Johnson Approach: Efficiency Analysis of Inpatient Ward at Rumah Sakit Islam (RSI) Surabaya in 2022-2023 with Barber Johnson Approach. Qanun Medika - Medical Journal Faculty of Medicine Muhammadiyah Surabaya. 10, 01 (Jan. 2026). DOI:https://doi.org/10.30651/jqm.v10i01.27393.