@misc{indiciae1bbc9b3bfa06,
  title = {Tryptophan and the brain.},
  year = {1973},
  doi = {10.1111/j.1753-4887.1973.tb05163.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/4581640/},
  note = {Source identifier: 4581640}
}