Direct anticoagulant drugs to overcome limitations of vitamin K antagonists. A critical appraisal of data in atrial fibrillation patients. Expert Opin Emerg Drugs 13 March Mar 2013 13 years ago Di Minno MN, Russolillo A, Di Minno A, Camera M, Parolari A, Tremoli E http://www.ncbi.nlm.nih.gov/pubmed/?term=23448155