@article{Sun2007,
author = {Sun, W. and Watanabe, M. and Tanimoto, Y. and Shibutani, T. and Kono, R. and Saito, M. and Usuda, K. and Kono, K.},
title= {Factors associated with good self-rated health of non-disabled elderly living alone in Japan: A cross-sectional study},
year = {2007},
doi = {10.1186/1471-2458-7-297},
journal = {BMC Public Health},
volume = {7},
pages = {297−305},
}