<br>        Inclusion criteria:<br><br>          -  Acute symptomatic superficial thrombophlebitis of the lower limbs at least 5 cm long<br>             diagnosed by compression ultrasound.<br><br>        Exclusion criteria:<br><br>          -  Superficial thrombophlebitis that is within 3 cm from the sapheno-femoral junction,<br><br>          -  deep vein thrombosis on ultrasound exam, deep vein thrombosis or pulmonary embolism<br>             within last 6 months, treatment for cancer during last 6 months,<br><br>          -  anticoagulant medication for more than 48 hours prior to inclusion,<br><br>          -  need for oral non-steroidal anti-inflammatory drugs during the study, significant<br>             bleeding event during past month,<br><br>          -  major surgery within last 3 months, low platelet count (below 100×109/L),<br><br>          -  kidney disease (Calculated creatinine clearance < 30 mL/min), woman of child-bearing<br>             potential not using reliable contraceptive method<br>      ;<br>        Inclusion criteria:<br><br>          -  Acute symptomatic superficial thrombophlebitis of the lower limbs at least 5 cm long<br>             diagnosed by compression ultrasound.<br><br>        Exclusion criteria:<br><br>          -  Superficial thrombophlebitis that is within 3 cm from the sapheno-femoral junction,<br><br>          -  deep vein thrombosis on ultrasound exam, deep vein thrombosis or pulmonary embolism<br>             within last 6 months, treatment for cancer during last 6 months,<br><br>          -  anticoagulant medication for more than 48 hours prior to inclusion,<br><br>          -  need for oral non-steroidal anti-inflammatory drugs during the study, significant<br>             bleeding event during past month,<br><br>          -  major surgery within last 3 months, low platelet count (below 100×109/L),<br><br>          -  kidney disease (Calculated creatinine clearance < 30 mL/min), woman of child-bearing<br>             potential not using reliable contraceptive method<br>      ;<br>        Inclusion criteria:<br><br>          -  Acute symptomatic superficial thrombophlebitis of the lower limbs at least 5 cm long<br>             diagnosed by compression ultrasound.<br><br>        Exclusion criteria:<br><br>          -  Superficial thrombophlebitis that is within 3 cm from the sapheno-femoral junction,<br><br>          -  deep vein thrombosis on ultrasound exam, deep vein thrombosis or pulmonary embolism<br>             within last 6 months, treatment for cancer during last 6 months,<br><br>          -  anticoagulant medication for more than 48 hours prior to inclusion,<br><br>          -  need for oral non-steroidal anti-inflammatory drugs during the study, significant<br>             bleeding event during past month,<br><br>          -  major surgery within last 3 months, low platelet count (below 100×109/L),<br><br>          -  kidney disease (Calculated creatinine clearance < 30 mL/min), woman of child-bearing<br>             potential not using reliable contraceptive method<br>      ;<br>        Inclusion criteria:<br><br>          -  Acute symptomatic superficial thrombophlebitis of the lower limbs at least 5 cm long<br>             diagnosed by compression ultrasound.<br><br>        Exclusion criteria:<br><br>          -  Superficial thrombophlebitis that is within 3 cm from the sapheno-femoral junction,<br><br>          -  deep vein thrombosis on ultrasound exam, deep vein thrombosis or pulmonary embolism<br>             within last 6 months, treatment for cancer during last 6 months,<br><br>          -  anticoagulant medication for more than 48 hours prior to inclusion,<br><br>          -  need for oral non-steroidal anti-inflammatory drugs during the study, significant<br>             bleeding event during past month,<br><br>          -  major surgery within last 3 months, low platelet count (below 100×109/L),<br><br>          -  kidney disease (Calculated creatinine clearance < 30 mL/min), woman of child-bearing<br>             potential not using reliable contraceptive method<br>