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Goené RJ, Winkel EG, Abbas F, Rodenburg JP, van Winkelhoff AJ, de Graaff J.Goené RJ, et al. Among authors: van winkelhoff aj.J Periodontol. 1990 Jan;61(1):61-4. doi: 10.1902/jop.1990.61.1.61.J Periodontol. 1990.PMID: 2179514
Van Winkelhoff AJ, Van der Velden U, Winkel EG, de Graaff J.Van Winkelhoff AJ, et al. Among authors: van der velden u.J Periodontal Res. 1986 Jul;21(4):434-9. doi: 10.1111/j.1600-0765.1986.tb01477.x.J Periodontal Res. 1986.PMID: 2942671No abstract available.
van Winkelhoff AJ, van der Velden U, de Graaff J.van Winkelhoff AJ, et al. Among authors: van der velden u.J Clin Periodontol. 1988 Feb;15(2):116-22. doi: 10.1111/j.1600-051x.1988.tb01004.x.J Clin Periodontol. 1988.PMID: 3279070
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