Published on in Vol 19 , No 10 (2017) :October

1 Milken Insitute School of Public Health , George Washington University , Washington , DC , US
2 Department of Obstetrics and Gynecology , MedStar Washington Hospital Center , Washington , DC , US
Published on in Vol 19 , No 10 (2017) :October
1 Milken Insitute School of Public Health , George Washington University , Washington , DC , US
2 Department of Obstetrics and Gynecology , MedStar Washington Hospital Center , Washington , DC , US