1. Department of Food Science and Nutrition, Kyungpook National University, Daegu 702-701, Korea.
2. Division of Chronic Disease Surveillance, Korea Centers for Disease Control & Prevention, Seoul 122-701, Korea.
3. Department of Preventive Medicine, Keimyung University College of Medicine, Daegu 700-712, Korea.
4. Public Health Division, Daegu Metropolitan City, Daegu 700-714, Korea.
5. Food Science & Nutrition, Catholic University, Bucheon 420-743, Korea.