TY  - RPRT
TI  - Diagnostic and therapeutic endoscopy.
AU  - N I Church
AU  - K R Palmer
PY  - 1999
DO  - 10.1097/00001574-199911000-00008
UR  - https://pubmed.ncbi.nlm.nih.gov/17023997/
ID  - 17023997
ER  -