DOI:
10.1055/s-00000134
Diabetologie und Stoffwechsel
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References
Guyatt GH, Oxman AD, Vist GE et al.
GRADE: an emerging consensus on rating quality of evidence and strength of recommendations.
BMJ 2008;
336 (7650) 924-926
http://www.ncbi.nlm.nih.gov/pubmed/18436948
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