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Frencken JE, Van 't Hof MA, Truin GJ, Lembariti BS, König KG.Frencken JE, et al. Among authors: konig kg.J Dent Res. 1989 Dec;68(12):1777-80. doi: 10.1177/00220345890680121101.J Dent Res. 1989.PMID: 2600260