Edit Edel Renate Tangen Vågen Position Dental Hygienist Instructor Affiliation Faculty of Medicine Department of Clinical Dentistry E-mail renate.edel@uib.no Postal address P.O. Box 7804 NO-5020 Bergen Norway Edel Renate Tangen Vågen Position Dental Hygienist Instructor Affiliation Faculty of Medicine Department of Clinical Dentistry