RT Journal Article SR Electronic T1 Epidemic of ischaemic heart disease and the educational disparities in China JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 1029 OP 1030 DO 10.1136/jech-2021-217438 VO 75 IS 11 A1 Yaoyue Hu YR 2021 UL http://jech.bmj.com/content/75/11/1029.abstract AB