M. . M. Islam, M. I. Hossain, M. . R. U. Tarek, S. M. H. Razon, and I. Ahmed, “Subarachnoid block versus general anaesthesia for laparoscopic cholecystectomy-A comparative study”, J. Dhaka Natl. Med. Coll. Hosp., vol. 21, no. 2, pp. 38–41, Sep. 2015.