TY - JOUR A1 - Liu, B.Q. A1 - Peto, R. A1 - Chen, Z.M. A1 - Boreham, J. A1 - Wu, Y.P. A1 - Li, J.Y. A1 - Campbell, T.C. A1 - Chen, J.S. T1 - Emerging tobacco hazards in China: 1. Retrospective proportional mortality study of one million deaths Y1 - 1998 DO - 10.1136/bmj.317.7170.1411 JF - British Medical Journal VL - 317 IS - 7170 ER -