TY  - RPRT
TI  - Upper gastrointestinal tract.
AU  - A J McLean
PY  - 1995
DO  - 10.5694/j.1326-5377.1995.tb139952.x
UR  - https://pubmed.ncbi.nlm.nih.gov/7715529/
ID  - 7715529
ER  -