TY  - RPRT
TI  - [Debatable diagnostic problems in biliary tract diseases].
AU  - N V El'shteĭn
AU  - U B Mardna
AU  - E R Lond
AU  - U I Iosiia
PY  - 1981
UR  - https://pubmed.ncbi.nlm.nih.gov/7221941/
ID  - 7221941
ER  -