M. S. Akhtar, N. Khan, A. Qayyum, and S. Z. Khan, “COST DIFFERENCE OF ENHANCED RECOVERY AFTER SURGERY PATHWAY VS. CONVENTIONAL CARE IN ELECTIVE LAPAROSCOPIC CHOLECYSTECTOMY”, J Ayub Med Coll Abbottabad, vol. 32, no. 4, pp. 470–475, Sep. 2020.