1. Department of Pathology, Gachon University Gil Hospital, Incheon, Korea.
2. Department of Pathology, The Methodist Hospital, Weill Medical College of Cornell University, Houston, TX, USA.
3. Department of Hematooncology, Gachon University Gil Hospital, Incheon, Korea.
4. Department of Pathology, Yeungnam University College of Medicine, Daegu, Korea.