* Corresponding authors

^a National Leading Research Laboratory of Clinical Nutrigenetics/Nutrigenomics, Department of Food and Nutrition, College of Human Ecology, Yonsei University, Seoul, Korea

^b Research Center for Silver Science, Institute of Symbiotic Life-TECH, Yonsei University, Seoul, Korea

^c Department of Food and Nutrition, Brain Korea 21 PLUS Project, College of Human Ecology, Yonsei University, Seoul, Korea
E-mail: jhleeb@yonsei.ac.kr
Fax: +82-2-364-9605
Tel: +82-2-2123-3122

^d Anydoctor Healthcare Co., Ltd, Cheonan, Korea

^e Institute of Infrastructure Technology Research, Japan Bio Science Laboratory Co., Ltd, Osaka, Japan

^f Department of Family Practice, National Health Insurance Corporation, Ilsan Hospital, Goyang, Korea