机构:
Johns Hopkins Univ, Sch Med, Div Geriatr Med & Gerontol, Baltimore, MD 21224 USAJohns Hopkins Univ, Sch Med, Div Geriatr Med & Gerontol, Baltimore, MD 21224 USA
Leng, Sean X.
Li, Xiao-Ying
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机构:
Chinese Great Wall Hosp, Dept Geriatr Cardiol, Beijing 100853, Peoples R ChinaJohns Hopkins Univ, Sch Med, Div Geriatr Med & Gerontol, Baltimore, MD 21224 USA