Patient recruitment diagram. The 2 groups of women with recurrent abortions or 1 fetal death: women with the F5 rs6025 or F2 rs1799963 polymorphism (Thrombophilia group), and women with negative antiphospholipid antibodies and a negative thrombophilia screening (No thrombophilia group). HBV, hepatitis B virus; HCV, hepatitis C virus.