1. Department of Internal Medicine, Tokyo Bay Urayasu Ichikawa Medical Center, Urayasu, Chiba, Japan
2. Department of Medical Oncology, St. Luke’s International Hospital, Tokyo, Japan
3. Department of Pulmonary Medicine, Tokyo Bay Urayasu Ichikawa Medical Center, Urayasu, Chiba, Japan
4. Department of Cardiology, Tokyo Bay Urayasu Ichikawa Medical Center, Urayasu, Chiba, Japan