Classification of periodontal diseases.
Baltimore College of Dental Surgery, Dental School, University of Maryland, USA.
R R
RR
Ranney
D010520:Aggressive Periodontitis / Q000145:classification; D005891:Gingivitis / Q000145:classification; D006801:Humans; D010510:Periodontal Diseases / Q000145:classification*; D010518:Periodontitis / Q000145:classification; D009626:Terminology as Topic