Shorter or longer anticoagulation to prevent recurrent venous thromboembolism: systematic review and meta-analysis.
Luciane Cruz LopesJohn EikelboomFrederick A SpencerElie A AklClive KearonIgnacio NeumannSam SchulmanNeera BhatnagarGordon GuyattPublished in: BMJ open (2014)
PROSPERO (CRD42014007620).