TY  - RPRT
TI  - Sonolucent biliary cast preventing endoscopic sphincterotomy.
AU  - F Shanahan
AU  - J Lennon
AU  - T Corrigan
PY  - 1981
DO  - 10.1055/s-2007-1021689
UR  - https://pubmed.ncbi.nlm.nih.gov/7274174/
ID  - 7274174
ER  -