| Affiliation: | (1) Public Dental Health Office, Schwelm, Germany;(2) Helmholtz Zentrum of Munich, German Research Centre for Environmental Health, Institute of Epidemiology, Neuerberg, Germany;(3) Dr. von Hauner Children’s Hospital, Ludwig-Maximilians-University of Munich, Munich, Germany;(4) Department of Conservative Dentistry and Periodontology, Ludwig-Maximilians-University of Munich, Munich, Germany;(5) Department of Preventive Dentistry, University of Jena, Jena, Germany;(6) Poliklinik f?r Zahnerhaltung und Parodontologie, Ludwig-Maximilians-Universit?t M?nchen, Goethestra?e 70, 80336 Munich, Germany; |
