In 1965, Olav Egeberg first described hereditary antithrombin III deficiency. The disorder helped explain why some families suffered repeated venous thrombosis and pulmonary embolism. It also clarified the importance of antithrombin, the natural inhibitor that heparin enhances.

The description of inherited antithrombin deficiency in 1965 linked thrombosis to family history and invisible inheritance. This theme resonates in poetry, where blood often symbolizes ancestry, fate, and vulnerability, enriching the emotional depth of literary explorations.