Researchers Determine Vitamin D Level Necessary to Help Reduce Preterm Births by 50%!

http://articles.mercola.com/sites/articles/archive/2015/11/30/vitamin-d-level-preterm-births.aspx?e_cid=20151130Z1_DNL_art_1&utm_source=dnl&utm_medium=email&utm_content=art1&utm_campaign=20151130Z1&et_cid=DM93076&et_rid=1241614277