@article{Yu1998,
author = {Yu, E.S. and Kean, Y.M. and Slymen, D.J. and Liu, W.T. and Zhang, M. and Katzman, R.},
title= {Self-perceived health and 5-year mortality risks among the elderly in Shanghai, China},
year = {1998},
doi = {10.1093/oxfordjournals.aje.a009542},
volume = {147},
number = {9},
pages = {880--890},
}