Outougari M, Hosseinzadeh Lotfi F, Rostamy-Malkhalifeh M, Allahviranloo T. Revenue Efficiency and the Detection and Analysis of Congestion in Pharmaceutical Companies: A Two-Stage Framework. Ann. Healthc. Syst. Eng. 2025;2(4):262-274. doi:10.22105/ahse.v2i4.55