Siregar FD, Girsang E, Nasution SLR. The influence of supervision by the head of medical services and nurse performance on patient safety at Aek Kanopan Regional General Hospital. BKKP [Internet]. 2026 Mar. 5 [cited 2026 Apr. 3];5(1):78-83. Available from: http://139.162.50.187/index.php/bulkesprima/article/view/8087