[1] Dalian Med Univ, Grad Sch, Dalian 116000, Liaoning, Peoples R China
[2] Gen Hosp Northern Theater Command, Dept Cardiovasc Surg, State Key Lab Frigid Zone Cardiovasc Dis, 83 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
[3] China Med Univ, Shengjing Hosp, Dept Pediat, Shenyang 110004, Liaoning, Peoples R China
[4] Shenyang Med Coll, Sch Clin Med 1, Shenyang 110034, Liaoning, Peoples R China