Siddiqui, J. A., S. aijaz Zaidi, J. Iqbal, N. Qamar, R. Adil, A. Ahmed, M. Arif, and A. Anwar. “Smoking and Blood Pressure Levels in Hypertensive Patients: Evaluating the Role of Gender, Age and Hypertension Duration”. International Journal of Research in Medical Sciences, vol. 7, no. 5, Apr. 2019, pp. 1610-4, doi:10.18203/2320-6012.ijrms20191645.