1. Departments of Medicine (N.C.), Pathumthani 10200, Thailand
2. Department of Medicine (B.O., L.C.), Ramathibodi Hospital, Mahidol University, Bangkok 10400, Thailand
3. Department of Medicine (E.N.P., X.H., L.E.B.), Boston University School of Medicine, Boston, Massachusetts 02118-2308
4. Obstetrics and Gynecology (C.S., A.C.), Faculty of Medicine, Thammasat University, Pathumthani 10200, Thailand