1 The Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Maine Medical Center, Portland, ME; MaineHealth Institute for Research, Scarborough, ME.
2 The Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Maine Medical Center, Portland, ME; MaineHealth Institute for Research, Scarborough, ME. Electronic address: Joseph.Wax@Mainehealth.org.