Gul, Afshan, and Rajeswari Rowlands. “Effect of Hookah Smoking on Serum Cholesterol, Plasma Ascorbic Acid, Respiration Rate and Blood Pressure in Agricultural Labourers”. The Indian Journal of Nutrition and Dietetics 27, no. 7 (July 1, 1990): 220–222. Accessed April 29, 2024. http://www.informaticsjournals.com/index.php/ijnd/article/view/7783.