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Figure 3 | BMC Oral Health

Figure 3

From: The NTI-tss device for the therapy of bruxism, temporomandibular disorders, and headache – Where do we stand? A qualitative systematic review of the literature

Figure 3

Allocation of the identified 68 articles according to the hierarchy of strength of evidence. Red: hits in electronic databases (n = 20); green: publications identified by searching the websites (n = 19); orange: articles found in the reference lists of identified articles (n = 6); purple: contributions found in textbooks (n = 1); blue: publications mailed by providers of the NTI-tss device (n = 19); black: publications found in other sources (n = 3).

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BMC Oral Health

ISSN: 1472-6831

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