Key Laboratory of Orogenic Belts and Crustal Evolution;
MOE;
Beijing Key Laboratory of Mineral Environmental Function;
School of Earth and Space Sciences;
Peking University;
Beijing 100871;
China;
Department of Cardiology;
Beijing Hospital;
Beijing 100730;
China;
Department of Pathology;
Beijing Hospital;
Beijing 100730;
China;
Ca; test; EDS; The Characterization of Aortic Valve Calcification at Different Stage of Disease; than;