Points: Circadian changes in anticoagulant effect of haparin infused at a constant rateBr Med J (Clin Res Ed) 1985; 290 doi: https://doi.org/10.1136/bmj.290.6470.793-e (Published 09 March 1985) Cite this as: Br Med J (Clin Res Ed) 1985;290:793
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