Prof. Dr. Zahur Qayyum Publications Sheikh, M. N., Hanif, S., Zia, M., & Qayyum, Z. (2011). Effects of nicotine on an in vitro reconstituted model oral mucosa in terms of cytokine production. Journal of Ayub Medical College Abbottabad, 23(4), 80-84. Sheikh, M. N., Hanif, S., Pasha, F., Irfan, M., & Qayyum, Z. […]