TY  - RPRT
TI  - Performing screening flexible sigmoidoscopy using colonoscopes: experience in 500 subjects.
AU  - D K Rex
AU  - G A Lehman
AU  - R H Hawes
AU  - K W O'Connor
AU  - J J Smith
DO  - 10.1016/s0016-5107(90)71121-2
UR  - https://pubmed.ncbi.nlm.nih.gov/2227321/
ID  - 2227321
ER  -