DOI:
10.1055/s-00000026
Informationen aus Orthodontie & Kieferorthopädie
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References
Chalmers TC, Levin H, Sacks HS et al.
Meta-analysis of clinical trials as a scientific discipline. I: Control of bias and comparison with large co-operative trials.
Stat Med 1987;
6 (03) 315-328
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