@article{hua tian2022of,
  title={Health of Widowed Elderly and Related Factors in China},
  author={hua tian,jie chen},
  journal={Journal of Men's Health},
  volume={18},
  number={8},
  pages={1--9},
  doi = {10.31083/j.jomh1808163},
  year={2022}
}