TY  - RPRT
TI  - Normal gallbladder ejection fraction after morphine augmentation.
AU  - D M Achong
AU  - E Oates
PY  - 1999
DO  - 10.1097/00003072-199911000-00001
UR  - https://pubmed.ncbi.nlm.nih.gov/10551461/
ID  - 10551461
ER  -