TY  - RPRT
TI  - Optimal intervals and techniques for screening sigmoidoscopy.
AU  - Richard C Wender
PY  - 2003
DO  - 10.1001/jama.290.16.2123-a
UR  - https://pubmed.ncbi.nlm.nih.gov/14570943/
ID  - 14570943
ER  -