00391nas a2200145   4500000000100000008004100001100001100042700001100053700001000064700001300074700001100087245013200098300000900230490000600239       2013                            d1 aYan L.1 aSun J.1 aWu Y.1 aZhang J.1 aLiu T.00aIndividuals at high risk of cardiovascular disease and risk factors in rural China：A survey in two counties in Hebei Province  a21-60 v6