TY  - RPRT
TI  - Duodenoscopy.
AU  - J A Gregg
AU  - M Garabedian
PY  - 1971
DO  - 10.1016/s0039-6109(16)39440-3
UR  - https://pubmed.ncbi.nlm.nih.gov/5579025/
ID  - 5579025
ER  -