Ugochukwu, C., Ebong, P. and Eyong, E. (2008) “Biochemical Implication of Long Term Administration of Halofantrine Hydrochloride (Halfan) on Estradiol Levels of Female Wistar Rats”, Pakistan Journal of Nutrition, 7(2), pp. 227–230. doi:10.3923/pjn.2008.227.230.