claim: anticoagulant treatment is associated with decreased mortality in severe coronavirus disease 2019 patients with coagulopathy
evidence_1: conclusions: anticoagulant therapy mainly with low molecular weight heparin appears to be associated with better prognosis in severe covid-19 patients meeting sic criteria or with markedly elevated d-dimer.", "tang n, li d, wang x, sun z. abnormal coagulation parameters are associated with poor prognosis in patients with novel coronavirus pneumonia.")