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Almind G, Holstein BE, Holst E, Due P.Almind G, et al. Among authors: due p.Scand J Prim Health Care. 1991 Dec;9(4):252-8. doi: 10.3109/02813439109018528.Scand J Prim Health Care. 1991.PMID: 1792450
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Holstein BE, Due P, Ito H.Holstein BE, et al. Among authors: due p.Tandlaegernes Tidsskr. 1990 Sep;5(9):252-5.Tandlaegernes Tidsskr. 1990.PMID: 2242271Danish.No abstract available.