@misc{indiciae3262353b35ad,
  title = {Changes in China.},
  author = {T O Cheng},
  year = {1972},
  doi = {10.1056/nejm197208032870527},
  url = {https://pubmed.ncbi.nlm.nih.gov/5037507/},
  note = {Source identifier: 5037507}
}