Sharma, P. K., and N. Khalsa. “A Study of Serum Lipids in Relation to Socio-Economic and Nutritional Status in Women Using Oral Contraceptive”. The Indian Journal of Nutrition and Dietetics, vol. 15, no. 8, Aug. 1978, pp. 271-9, https://www.informaticsjournals.com/index.php/ijnd/article/view/12154.