1. Gardner MJ, Tornatore KM, Jusko WJ, Kanarkowski R: Effects of tobacco smoking and oral contraceptive use on theophylline disposition. Br J Clin Pharmacol. 1983 Sep;16(3):271-80. doi: 10.1111/j.1365-2125.1983.tb02161.x. [PubMed:6626419 ]