keywords ANTIPHOSPHOLIPID SYNDROME COAGULATION-FACTOR-V DEEP-VEIN THROMBOSIS FACTOR-V-LEIDEN GENE G20210A MUTATION Hematology Life Sciences & Biomedicine PROTHROMBIN GENE RECURRENT THROMBOSIS SUSPECTED PULMONARY-EMBOLISM SYSTEMIC-LUPUS-ERYTHEMATOSUS Science & Technology VENOUS THROMBOSIS