TY  - RPRT
TI  - Development of a constipation risk assessment scale.
AU  - J Duffy
AU  - W Zernike
PY  - 1997
DO  - 10.1111/j.1440-172x.1997.tb00111.x
UR  - https://pubmed.ncbi.nlm.nih.gov/9611538/
ID  - 9611538
ER  -