F2 and deep vein thrombosis: Studies that reported alteration in prothrombin time (PT), activated partial prothrombin time (aPTT), thrombin time (TT), D-dimer and CRP levels, urinary thromboxane A2, thrombus size, and blood clot recurrence after a DVT for hospitalized patients and postdischarge extended-duration thromboprophylaxis for prevention of VTE in patients.