[1] Natl Canc Ctr, Res Inst & Hosp, Qual Canc Care Branch, Goyang 411769, Gyeonggi, South Korea
[2] Natl Canc Ctr, Res Inst & Hosp, Uterine Canc Branch, Goyang 411769, Gyeonggi, South Korea
[3] Natl Canc Ctr, Res Inst & Hosp, Breast Canc Branch, Goyang 411769, Gyeonggi, South Korea
[4] Univ Texas, MD Anderson Canc Ctr, Dept Symptom Res, Houston, TX 77030 USA
[5] Yonsei Univ, Coll Med, Dept Radiat Oncol, Yonsei Canc Ctr, Seoul 120749, South Korea
[6] Gyeong Sang Natl Univ Hosp, Dept Internal Med, Jinju, South Korea
[7] Gachon Med Sch, Ghil Med Ctr, Dept Internal Med, Inchon, South Korea