TY  - RPRT
TI  - Cannulation techniques for ERCP: one size does not fit all.
AU  - Martin L Freeman
PY  - 2007
DO  - 10.1016/j.gie.2006.07.038
UR  - https://pubmed.ncbi.nlm.nih.gov/17185092/
ID  - 17185092
ER  -