Jafar khan; Abdul Wahab; Nafisa Tahir; Adil Abbasi; Qazi Tahir Uddin. Incidence of HIV Infection Amongst Intravenous Drug Users in the Urban and Peri-Urban Areas of Kohat, Khyber Pakhtunkhwa, Pakistan. World J Pharm Sci 2014, 2, 1930-1933.