1. Division of Hematology/Oncology, Innovative Cancer Medicine Institute, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 135-710, South Korea
2. Division of Medical Oncology, National Cancer Center, Singapore
3. Research Institute for Diseases of the Chest, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
4. Department of Oncology, National Taiwan University Hospital and National Taiwan University Cancer Center, Taipei, Taiwan