1. Geisinger Health System; Division of Maternal Fetal Medicine, Women's Health Service Line; 100 N Academy Ave Danville PA USA 17822
2. National Center for Child Health and Development; Department of Health Policy; 2-10-1 Okura, Setagaya-ku Tokyo Japan 157-8535
3. University of Toledo College of Medicine and Life Sciences; Department of Family Medicine; 3000 Arlington Avenue MS 1179 Toledo OH USA 43614