1. Department of Pathology; Taichung Veterans General Hospital; Taichung Taiwan
2. Division of Hematology-Oncology, Department of Internal Medicine; Taichung Veterans General Hospital; Taichung Taiwan
3. Department of Internal Medicine, College of Medicine; China Medical University; Taichung Taiwan
4. Department of Pathology, Chi-Mei Medical Center, Tainan, Taipei Medical University, Taipei; National Taiwan University; Taipei Taiwan