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机构:
Sungkyunkwan Univ, Samsung Med Ctr, Dept Med, Div Pulm & Crit Care Med,Sch Med, Seoul 06355, South Korea
Sungkyunkwan Univ, Dept Hlth Sci & Technol, SAIHST, Seoul 06355, South Korea Seoul Med Ctr, Dept Internal Med, Seoul, South Korea