TY  - RPRT
TI  - Endoscopic sphincterotomy assisted by catheterization antegrade.
AU  - W B Long
AU  - W Schwarz
AU  - E J Ring
PY  - 1984
DO  - 10.1016/s0016-5107(84)72295-4
UR  - https://pubmed.ncbi.nlm.nih.gov/6706088/
ID  - 6706088
ER  -