[1] Seoul Natl Univ, Skin Canc Chemotherapy Skin Care Ctr, Canc Hosp, Seoul 151, South Korea
[2] Seoul Natl Univ, Dept Dermatol, Coll Med, Seoul 151, South Korea
[3] Seoul Natl Univ, Inst Dermatol Sci, Med Res Ctr, Seoul 151, South Korea
[4] Seoul Natl Univ, Gastr Canc Ctr, Canc Hosp, Seoul 151, South Korea
[5] Seoul Natl Univ, Dept Surg, Coll Med, Seoul 151, South Korea
[6] Seoul Natl Univ, Canc Res Inst, Coll Med, Seoul 151, South Korea
[7] Seoul Natl Univ, Dept Internal Med, Inst Healthcare Res, Hosp Gangnam,Healthcare Ctr, Seoul 151, South Korea
[8] Seoul Natl Univ, Ctr Canc Educ & Informat, Canc Hosp, Seoul 151, South Korea
[9] Seoul Natl Univ, Dept Family Med, Coll Med, Seoul 151, South Korea
[10] Seoul Natl Univ, Thyroid Canc Ctr, Canc Hosp, Seoul 151, South Korea
[11] Seoul Natl Univ, Dept Biomed Engn, Coll Med, Seoul 151, South Korea
[12] Seoul Natl Univ, Breast Canc Ctr, Canc Hosp, Seoul, South Korea