@misc{indiciae34119d3b77c8, title = {Second trimester folate status and preterm birth.}, author = {Anna Maria Siega-Riz and David A Savitz and Steven H Zeisel and John M Thorp and Amy Herring}, year = {2004}, doi = {10.1016/j.ajog.2004.07.076}, url = {https://pubmed.ncbi.nlm.nih.gov/15592264/}, note = {Source identifier: 15592264} }