TY  - RPRT
TI  - Screening sigmoidoscopy in persons aged 60 years.
AU  - J Santavirta
PY  - 2002
DO  - 10.1046/j.1463-1318.2002.00298.x
UR  - https://pubmed.ncbi.nlm.nih.gov/12780613/
ID  - 12780613
ER  -