TY  - RPRT
TI  - [4199 biopsies from the endoscopic normal lower duodenum].
AU  - S Walker
AU  - U Rühl
PY  - 2003
DO  - 10.1055/s-2003-36674
UR  - https://pubmed.ncbi.nlm.nih.gov/12541178/
ID  - 12541178
ER  -