[1] Dongguk Univ, Ilsan Hosp, Cardiovasc Ctr, Seoul, South Korea
[2] Dongguk Univ, Ilsan Hosp, Div Nephrol, Seoul, South Korea
[3] Dongguk Univ, Ilsan Hosp, Dept Clin Pharmacol & Therapeut, Seoul, South Korea
[4] Dongguk Univ, Gyeongju Hosp, Cardiovasc Ctr, Seoul, South Korea
[5] Dongguk Univ, Survey & Hlth Policy Res Ctr, Dept Stat, Seoul, South Korea
[6] Korea Ctr Dis Control, Div Hlth & Nutr Survey, Cheongju, South Korea
[7] Korea Ctr Prevent, Div Hlth & Nutr Survey, Cheongju, South Korea