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Hoeve LJ, Conijn EA, Mertens zur Borg IR, Rodenburg M.Hoeve LJ, et al. Among authors: conijn ea.Arch Otorhinolaryngol. 1987;244(5):265-8. doi: 10.1007/BF00468633.Arch Otorhinolaryngol. 1987.PMID: 3439914
Conijn EA, Brocaar MP, van Zanten GA, van der Drift JF.Conijn EA, et al.Audiology. 1992;31(5):284-92. doi: 10.3109/00206099209072916.Audiology. 1992.PMID: 1449431