R. Ahmed, N. W. Yusuf, I. Javeid, M. Arif, and S. Haider, “RISK FACTORS AMONG HIV POSITIVE/AIDS PATIENTS: A PROSPECTIVE STUDY AT A TERTIARY CARE REFERRAL CENTRE”, J Ayub Med Coll Abbottabad, vol. 24, no. 3-4, pp. 65–67, Dec. 2012.