[1] Inje Univ, Ilsan Paik Hosp, Dept Internal Med, Goyang, South Korea
[2] Natl Med Ctr, Dept Internal Med, Seoul, South Korea
[3] Natl Med Ctr, Dept Nutr, Seoul, South Korea
[4] Sung Ae Hosp, Dept Internal Med, Seoul, South Korea
[5] Chung Ang Univ Hosp, Dept Nutr, Seoul, South Korea
[6] Kyung Hee Univ, Med Ctr, Dept Nutr, Seoul, South Korea
[7] Samsung Med Ctr, Dept Nutr, Seoul, South Korea
[8] Inje Univ, Seoul Paik Hosp, Dept Nursing, Gyeongnam, South Korea
[9] Seoul Natl Univ Hosp, Dept Nursing, Seoul, South Korea
[10] Asan Med Ctr, Dept Nursing, Asan, South Korea
[11] Hallym Univ, Dept Social Work, Sacred Heart Hosp, Seoul, South Korea
[12] Hallym Univ, Coll Med, Dept Internal Med, Seoul, South Korea
[13] Univ Texas Med Branch, Sch Nursing, Galveston, TX USA
[14] Cheongju Univ, Dept Social Welf, Cheongju, South Korea