TY  - RPRT
TI  - Recurrent ulcer treated with colloidal bismuth.
AU  - J Koo
AU  - S K Lam
PY  - 1983
DO  - 10.5694/j.1326-5377.1983.tb99353.x
UR  - https://pubmed.ncbi.nlm.nih.gov/6571529/
ID  - 6571529
ER  -