1. Department of Nursing, Chang Gung Medical Foundation at Linkou, Guishan, Taoyuan, Taiwan
2. Department of Hematology-Oncology, Chang Gung Memorial Hospital at Linkou, Guishan, Taoyuan, Taiwan
3. Department of Hema-Oncology, Division of Internal Medicine, Mackay Memorial Hospital, Taipei, Taiwan
4. Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Guishan, Taoyuan, Taiwan