TY  - RPRT
TI  - Nitrous oxide and pregnancy.
AU  - J F Nunn
PY  - 1987
DO  - 10.1111/j.1365-2044.1987.tb03989.x
UR  - https://pubmed.ncbi.nlm.nih.gov/3592161/
ID  - 3592161
ER  -