1. Departments of Pathology and Laboratory Medicine (S.M.K.A., T.K., M.A.K.R., M.J.S.), Institute of Maternal-Fetal Biology, University of Kansas Medical Center, Kansas City, Kansas 66160
2. Departments of Obstetrics and Gynecology (Y.D., C.P.W., M.J.S.), Institute of Maternal-Fetal Biology, University of Kansas Medical Center, Kansas City, Kansas 66160