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Snik AF, Jorritsma FF, Cremers CW, Beynon AJ, van den Berge NW.Snik AF, et al.Scand Audiol. 1992;21(3):157-61. doi: 10.3109/01050399209045997.Scand Audiol. 1992.PMID: 1439502
van den Borne B, van den Broek P, Snik A, Vermeulen A, Brokx J.van den Borne B, et al.Adv Otorhinolaryngol. 1995;50:108-13. doi: 10.1159/000424444.Adv Otorhinolaryngol. 1995.PMID: 7610944No abstract available.