doi:10.1056/NEJMc1308259engGrzybowski, A.Ascaso, F.J.Antithrombotic therapy and invasive procedures [5]ART-2013-83195To the Editor: Baron et al. (May 30 issue) make important suggestions in their review article; however, we propose that quantitative assessment of iatrogenic bleeding hazards must be considered as well as thrombosis prevention. Although CHA2DS2–VASc scoring for atrial fibrillation is mentioned, the Hypertension, Abnormal Renal/Liver Function, Stroke, Bleeding History or Predisposition, Labile INR, Elderly, Drugs/Alcohol Concomitantly (HAS-BLED) score for bleeding has also been validated. Both scores calculate estimated annual risks and benefits and hence can guide future therapy...2013http://zaguan.unizar.es/record/6147510.1056/NEJMc1308259http://zaguan.unizar.es/record/61475oai:zaguan.unizar.es:61475NEW ENGLAND JOURNAL OF MEDICINE 369, 11 (2013), 1077-1080All rights reservedhttp://www.europeana.eu/rights/rr-f/info:eu-repo/semantics/openAccess