[1] Samsung Med Ctr SMC, Dept Family Med, Seoul, South Korea
[2] Samsung Med Ctr SMC, Support Care Ctr, Seoul, South Korea
[3] Samsung Med Ctr SMC, Patient Ctr Outcomes Res Inst, Seoul, South Korea
[4] Sungkyunkwan Univ, Dept Clin Res Design & Evaluat, SAIHST, Samsung Med Ctr SMC,Sch Med, Seoul, South Korea
[5] Sungkyunkwan Univ, Samsung Med Ctr SMC, Thorac & Cardiovasc Surg, Sch Med, Seoul, South Korea
[6] Samsung Med Ctr SMC, Thorac & Cardiovasc Surg, Seoul, South Korea
[7] Sungkyunkwan Univ, Sch Med, Dept Family Med, Samsung Med Ctr SMC, Seoul, South Korea
[8] Sungkyunkwan Univ, Support Care Ctr, Samsung Med Ctr SMC, Sch Med, Seoul, South Korea