TY  - RPRT
TI  - Nitrous oxide for colonoscopy: a randomized controlled study.
AU  - G M Forbes
AU  - B J Collins
PY  - 2000
DO  - 10.1016/s0016-5107(00)70354-3
UR  - https://pubmed.ncbi.nlm.nih.gov/10699770/
ID  - 10699770
ER  -