Deepali, S., K. D. Baghel, P. Smita, and M. Krishanan. “Role of Body Mass Index, Physical Activity and Nutrients in Cholelithiasis”. The Indian Journal of Nutrition and Dietetics, vol. 43, no. 6, July 2006, pp. 251-4, http://www.informaticsjournals.com/index.php/ijnd/article/view/6318.