[1] Pusan Natl Univ, Sch Korean Med, Dept Korean Med, Yangsan, South Korea
[2] Jaseng Hosp Korean Med, Seoul, South Korea
[3] Jaseng Med Fdn, Jaseng Spine & Joint Res Inst, 3F Jung Il Bldg,538 Gangnam Daero, Seoul, South Korea
[4] Woosuk Univ, Coll Korean Med, Dept Prevent Med, Wanju Gun, South Korea
[5] Emory Univ, Rollins Sch Publ Hlth, Prevent Sci, Atlanta, GA 30322 USA