TY  - RPRT
TI  - Recurrent aphthous ulceration.
AU  - D M Walker
AU  - A E Dolby
PY  - 1976
DO  - 10.1111/j.1365-4362.1976.tb04894.x
UR  - https://pubmed.ncbi.nlm.nih.gov/971977/
ID  - 971977
ER  -