TY  - RPRT
TI  - Does nasal oxygen reduce the cardiorespiratory problems experienced by elderly patients undergoing endoscopic retrograde cholangiopancreatography?
AU  - D J Haines
AU  - D Bibbey
AU  - J R Green
PY  - 1992
DO  - 10.1136/gut.33.7.973
UR  - https://pubmed.ncbi.nlm.nih.gov/1644341/
ID  - 1644341
ER  -