TY  - RPRT
TI  - Major hemorrhage from endoscopic sphincterotomy: risk factor analysis.
AU  - D B Nelson
AU  - M L Freeman
PY  - 1994
DO  - 10.1097/00004836-199412000-00004
UR  - https://pubmed.ncbi.nlm.nih.gov/7876506/
ID  - 7876506
ER  -