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Waldorff FB, Almind G, Mäkelä M, Møller S, Waldemar G.Waldorff FB, et al.Scand J Prim Health Care. 2003 Sep;21(3):142-7. doi: 10.1080/02813430310005136.Scand J Prim Health Care. 2003.PMID: 14531504Free article.Clinical Trial.
Waldorff FB, Rishøj S, Waldemar G.Waldorff FB, et al.Scand J Prim Health Care. 2005 Dec;23(4):221-6. doi: 10.1080/02813430510031324.Scand J Prim Health Care. 2005.PMID: 16272070Free article.