TY  - RPRT
TI  - Oesophageal stethoscope.
AU  - J O'Dea
AU  - I Hall
PY  - 1987
DO  - 10.1111/j.1365-2044.1987.tb05304.x
UR  - https://pubmed.ncbi.nlm.nih.gov/3434772/
ID  - 3434772
ER  -