Soomro, Irfan Ali, et al. “COMPARISON BETWEEN THE EFFICACY OF PREGABALIN AND AMITRIPTYLINE IN ALLEVIATING PAIN ASSOCIATED WITH PAINFUL DIABETIC PERIPHERAL NEUROPATHY: Efficacy of Pregabalin And Amitriptyline in Alleviating Pain”. Pakistan Armed Forces Medical Journal, vol. 68, no. 2, Oct. 2018, pp. 198-01, https://www.pafmj.org/PAFMJ/article/view/437.