1. 1Department of Medicine, Mount Auburn Hospital, Harvard Medical School, Cambridge, MA
2. 2Division of Hematology and Medical Oncology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
3. 3Department of Medicine, Danbury Hospital, Danbury, CT
4. 4Department of Medicine, Jacobi Medical Center, Albert Einstein College of Medicine, Bronx, NY
5. 5Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
6. 6Section of Neurosurgery, Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
7. 7Division of Hemostasis and Thrombosis, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA