TY  - RPRT
TI  - [Necrotizing ulcerative gingivitis. How is it explained in 1980?].
AU  - C Hitzig
AU  - C Deleris
AU  - P Ciosi
PY  - 1980
UR  - https://pubmed.ncbi.nlm.nih.gov/7234552/
ID  - 7234552
ER  -