Association between circulating essential metals and pregnancy loss: A systematic review and meta-analysis.
OBJECTIVE To systematically compare circulating concentrations of iron (Fe), magnesium (Mg), manganese (Mn), and selenium (Se) between women with spontaneous pregnancy loss (SPL) or recurrent pregnancy loss (RPL) and pregnant controls. METHODS We searched PubMed, Embase, the Cochrane Library, and Web of Science from...