TY - JOUR AU - Khoshbin, Amir Hossein AU - sepehri, mohamad mhdi AU - Raissi, Sedigh TI - Optimum Staff Leveling of Hospital Emergency Department Using a Simulation Based Approach JO - Journal of healthcare management VL - 8 IS - 2 SP - 7 EP - 19 PY - 2017 DO - ER -