TY  - RPRT
TI  - Upper gastrointestinal endoscopy: are preparatory interventions effective?
AU  - M L Hackett
AU  - M R Lane
AU  - D C McCarthy
PY  - 1998
DO  - 10.1016/s0016-5107(98)70001-x
UR  - https://pubmed.ncbi.nlm.nih.gov/9786104/
ID  - 9786104
ER  -