DOI:
10.1055/s-00000036
Laryngo-Rhino-Otologie
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References
Barry H, Ebell M, Shaughnessy A, Slawson D.
Levels of Evidence.
Online im Internet, URL
https://www.essentialevidenceplus.com Abruf 16.09.2015, 11:50 Uhr CEST
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