Qian, Li [Analysis of salivary protease spectrum in chronic periodontitis]. [electronic resource] - Hua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology Feb 2017 - 37-42 p. digital Publication Type: Journal Article ISSN: 1000-1182 Standard No.: 10.7518/hxkq.2017.01.005 doi Subjects--Topical Terms: Chronic PeriodontitisHumansMatrix Metalloproteinase 8Matrix Metalloproteinase 9Saliva