TY  - RPRT
TI  - Letter: Artificial sighs.
AU  - D Nicholson
AU  - R M Mazey
PY  - 1974
DO  - 10.1001/jama.1974.03230470018006
UR  - https://pubmed.ncbi.nlm.nih.gov/4526505/
ID  - 4526505
ER  -