Affiliation: | 1. Department of Public Health, University of Copenhagen, DenmarkTel.: [+ 45 35 32 76 35], Fax: + [45 35 32 73 83];2. Department of Public Health, University of Copenhagen, Denmark;3. Department of Community Medicine, University of Troms?, Troms?, Norway;4. Department of Pharmacy, University of Troms?, Troms?, Norway;5. Clinical Research Centre, University Hospital Northern Norway, Troms?, Norway |