1. Comparison of periodontitis patients' classification in the 2018 versus 1999 classification. (28th June 2019) Authors: Graetz, Christian; Mann, Lucas; Krois, Joachim; Sälzer, Sonja; Kahl, Maren; Springer, Claudia; Schwendicke, Falk Journal: Journal of clinical periodontology Issue: Volume 46:Number 9(2019) Page Start: 908 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗