TY  - RPRT
TI  - Colonoscopy in surgical practice.
AU  - D C Britton
AU  - D Tregoning
AU  - G Bone
AU  - S T McKelvey
PY  - 1977
DO  - 10.1136/bmj.1.6054.149
UR  - https://pubmed.ncbi.nlm.nih.gov/832042/
ID  - 832042
ER  -