Portrait Pernilla Lundberg (IMAGE) Umea University Caption Pernilla Lundberg, periodontist and professor at the Department of Odontology at Umeå University. Credit Mattias Pettersson Usage Restrictions No restrictions. License Public Domain Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.