@misc{indiciae6396e7e1a10c,
  title = {Tryptophan in depression.},
  author = {A Coppen and K Wood},
  year = {1978},
  doi = {10.1177/003693307802300124},
  url = {https://pubmed.ncbi.nlm.nih.gov/635550/},
  note = {Source identifier: 635550}
}