Atieh, Momen A Photodynamic therapy as an adjunctive treatment for chronic periodontitis: a meta-analysis. [electronic resource] - Lasers in medical science Jul 2010 - 605-13 p. digital Publication Type: Journal Article; Meta-Analysis ISSN: 1435-604X Standard No.: 10.1007/s10103-009-0744-6 doi Subjects--Topical Terms: Chronic Periodontitis--drug therapyHumansPhotochemotherapy