Beijing Institute of Respiratory Medicine;
Beijing Chao-Yang Hospital;
Capital Medical University;
Beijing 100020;
China;
Baylor College of Medicine;
Houston;
TX 77004;
USA;
Department of Experimental Medicine and Toxicology;
Hammersmith Hospital;
Imperial College London;
London W120NN;
UK;
risk factor; stroke; prothrombin; plasminogen activator inhibitor type-1; polymorphism; thrombophilia; biomarker;