DOI:
10.1055/s-00000022
Das Gesundheitswesen
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References
Mamdani M, Sykora K, Li P et al.
Reader’s guide to critical appraisal of cohort studies: 2. Assessing potential for confounding.
BMJ 2005;
330: 960-962
DOI: 10.1136/bmj.330.7497.960.
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