1. Division of Gastroenterology and Hepatology, Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Korea
2. Department of Food and Nutrition, College of Human Ecology, Seoul National University, Seoul, Korea
3. Research Institute of Human Ecology, Seoul National University, Seoul, Korea
4. Department of Food and Nutrition, Sookmyung Women’s University, Seoul, Korea
5. Department of Internal Medicine, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Goyang, Korea