TY  - RPRT
TI  - [Strong opioids and constipation].
AU  - A Schwarzer
AU  - F Nauck
AU  - E Klaschik
PY  - 2005
DO  - 10.1007/s00482-004-0325-3
UR  - https://pubmed.ncbi.nlm.nih.gov/15004747/
ID  - 15004747
ER  -