Institution: | 1.University Associates in Dentistry, Chicago, IL, USA ;2.University Medical Center of Johannes Gutenberg University Mainz, Mainz, Germany ;3.Private Practice, Lindau, Germany ;4.University of Belgrade, Belgrade, Serbia ;5.University Medical Center Hamburg-Eppendorf, Hamburg, Germany ;6.Private Practice, New York, NY, USA ;7.University of Rome Tor Vergata, Rome, Italy ;8.Dental University Clinic, Medical University of Vienna, Vienna, Austria ; |