TY  - RPRT
TI  - Letter: Tryptophan in depression.
AU  - M Peet
PY  - 1974
DO  - 10.1016/s0140-6736(74)92104-7
UR  - https://pubmed.ncbi.nlm.nih.gov/4138421/
ID  - 4138421
ER  -