TY  - RPRT
TI  - Helicobacter pylori positivity.
AU  - U Blecker
AU  - Y Vandenplas
PY  - 1993
DO  - 10.1007/bf02073390
UR  - https://pubmed.ncbi.nlm.nih.gov/8223793/
ID  - 8223793
ER  -