TY  - RPRT
TI  - Constipation: is it a risk factor for cholesterol gallstones?
AU  - J L Watkins
AU  - T E Wiley
AU  - T J Layden
PY  - 1993
UR  - https://pubmed.ncbi.nlm.nih.gov/8340076/
ID  - 8340076
ER  -