TY  - RPRT
TI  - [Sonography and endoscopy as complementary study methods. Case report].
AU  - E Farrenkopf
PY  - 1983
DO  - 10.1055/s-2007-1013038
UR  - https://pubmed.ncbi.nlm.nih.gov/6648477/
ID  - 6648477
ER  -