TY  - RPRT
TI  - [Recurrent aphthae and their cytological features].
AU  - Z Knychalska-Karwan
AU  - J Biedowa
AU  - B Gawrzewska
PY  - 1984
UR  - https://pubmed.ncbi.nlm.nih.gov/6597079/
ID  - 6597079
ER  -