title: Retrospective clinical studies.
authors.affiliation: Aarhus University, Department of Clinical Medicine, 8200, Denmark. Electronic address: jcd@clin.au.dk.
authors.forename: Jens Christian
authors.initials: JC
authors.lastname: Djurhuus
mesh_terms: D035843:Biomedical Research; D006801:Humans; D011446:Prospective Studies; D012189:Retrospective Studies; D011795:Surveys and Questionnaires