B. Idonije, O., G. O. Eidangbe, S. O. Agbebaku, O. O. Festus, and F. O. Enahoro. 2013. “Status of Some Selected Antioxidants in Pregnant Nigerian Women”. Scientific Journal of Medical Science 2 (7):112-17. http://sjournals.com/index.php/sjms/article/view/1331.