00356nas a2200109   4500000000100000008004100001260003600042100001000078700000900088245013700097300001200234       2016                            d  bImperial College PressaLondon 1 aWu Y.1 aM Wu00aMajor challenges the rural China healthcare system is facing in the epidemic of chronic disease in the epidemic of chronic diseases.  a181-196