TY  - RPRT
TI  - Letter: Endoscopy in the "library.".
AU  - I B Brick
PY  - 1976
DO  - 10.7326/0003-4819-85-1-134_1
UR  - https://pubmed.ncbi.nlm.nih.gov/779570/
ID  - 779570
ER  -