TY  - RPRT
TI  - Cardiorespiratory changes during upper gastrointestinal endoscopy.
AU  - W C Edmondson
AU  - R J Eltringham
AU  - M W Gear
PY  - 1991
DO  - 10.1111/j.1365-2044.1991.tb09947.x
UR  - https://pubmed.ncbi.nlm.nih.gov/1781553/
ID  - 1781553
ER  -