DOI:
10.1055/s-00000021
Gesundheitsökonomie & Qualitätsmanagement
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References
Mohammed MA, Deeks JJ, Girling A et al.
Evidence of methodological bias in hospital standardised mortality ratios: retrospective database study of English hospitals.
BMJ 2009;
338: b780
DOI: doi:10.1136/bmj.b780. (Published 18 March 2009)
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