Dirk Pevernagie, Steering Committee of the European Sleep Research Society: European guidelines for the accreditation of sleep medicine centres. In: Journal of Sleep Research. Vol. 15, Nr.2, 2006, S.231–238, doi:10.1111/j.1365-2869.2006.00524.x, PMID 16704580 (englisch).
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Dirk Pevernagie, Steering Committee of the European Sleep Research Society: European guidelines for the accreditation of sleep medicine centres. In: Journal of Sleep Research. Vol. 15, Nr.2, 2006, S.231–238, doi:10.1111/j.1365-2869.2006.00524.x, PMID 16704580 (englisch).