@misc{indiciae20b2d731edd1,
  title = {Letter: Tryptophan in depression.},
  author = {H B McNamee},
  year = {1974},
  doi = {10.1016/s0140-6736(74)92196-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/4138422/},
  note = {Source identifier: 4138422}
}