1. Department of Food and Nutrition, Sookmyung Women's University, 52 Hyochangwon-gil, Yongsan-gu, Seoul 140-742, Korea.
2. National Cancer Center Institute, 111 Jungbalsan-ro, Ilsandong-gu, Goyang, Gyeonggi 410-769, Korea.
3. Department of Surgery, College of Medicine and Asan Medical Center, 388-1 Pungnap-2 dong, Songpa-gu, Seoul 138-736, Korea.