University Hospital, Limoges

Poznan University of Medical Sciences

Trakya University, Faculty of Dentistry

University of Palermo

Helsinki University Central Hospital

Duke University

Kaiser Permanente

Dental Practice-Based Research Network (DPBRN)

University of Florida

Dental Surgery Department, Wroclaw Medical University, Krakowska st. 26, 50-425 Wroclaw, Poland and Department of Periodontics, School of Dentistry Virginia Commonwealth University, 12th St, Richmond, VA 23298, USA

University of Alabama at Birmingham

HealthPartners of Minnesota

University of Pennsylvania, Department of Orthopaedic Surgery

Lecturer

AZ Sint-Lucas Brugge

University of Arkansas

University of Michigan Rogel Cancer Center

University of Pennsylvania