DOI:
10.1055/s-00000020
Geburtshilfe und Frauenheilkunde
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References
Guyatt G, Gutterman D, Baumann MH, Addrizzo-Harris D, Hylek EM, Phillips B, Raskob G, Lewis SZ, Schunemann H.
Grading strength of recommendations and quality of evidence in clinical guidelines: report from an american college of chest physicians task force.
Chest 2006; 129: 174-181
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