M. B. Sohail, B. Baig, M. Boota, A. Noor, and I.- ul Haq, “COMPARISON OF COLLOID (POLYGELINE) OVER CRYSTALLOID (LACTATED RINGER) PRELOADING IN PREVENTING HYPOTENSION IN PATIENTS UNDERGOING CAESAREAN-SECTION UNDER SPINAL ANAESTHESIA: Hypotension in Patients Undergoing Spinal Anaesthesia”, PAFMJ, vol. 62, no. 4, pp. 544–8, Dec. 2012.