@misc{indiciaedb4ed5a7e884,
  title = {How normal is depression?},
  author = {W W Zung},
  doi = {10.1016/s0033-3182(72)71431-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/4671918/},
  note = {Source identifier: 4671918}
}