[1] Inje Univ, Ilsan Paik Hosp, Div Pulm & Crit Care Med, Coll Med,Dept Internal Med, 170 Juwha Ro, Goyang Si 10380, Gyeonggi Do, South Korea
[2] Inje Univ, Dept Thorac & Cardiovasc Surg, Ilsan Paik Hosp, Coll Med, 170 Juwha Ro, Goyang Si 10380, Gyeonggi Do, South Korea
[3] Inje Univ, Dept Pathol, Ilsan Paik Hosp, Coll Med, 170 Juwha Ro, Goyang Si 10380, Gyeonggi Do, South Korea