[Chen, Ping; Ligons, Davinna; Talor, Monica; Barin, Jobert; Rose, Noel; Daniela, Cihakova] Johns Hopkins Univ, Sch Med, Baltimore, MD USA; [Baldeviano, G.; Barin, Jobert; Rose, Noel] Johns Hopkins Univ, Sch Publ Hlth, Baltimore, MD USA; [Chen, Ping] Fudan Univ, Shanghai, Peoples R China