1. From the Washington University School of Medicine (GA), St. Louis, Missouri, Bostwick Laboratories (DB), Richmond, Virginia, Emory University School of Medicine (OB), Atlanta, Georgia, Thomas Jefferson University (LG), Philadelphia, Pennsylvania, University of Vienna (MM), Vienna, Austria, Mayo Clinic (DT), Rochester, Minnesota, and GlaxoSmithKline (SB, MS, RR), Research Triangle Park, North Carolina