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Mild and severe thrombophilic defects
| Mild thrombophilia | Heterozygosity for factor V Leiden, heterozygosity for prothrombin G20210A |
| Severe thrombophilia | Homozygosity for factor V Leiden, homozygosity for prothrombin G20210A, protein C, protein S, antithrombin deficiency |
Antiphospholipid antibodies, combined defects.
