title: Plasma thromboplastin antecedent (PTA) deficiency.
mesh_terms: D001780:Blood Coagulation Tests; D005173:Factor XI Deficiency / Q000175:diagnosis; D005260:Female; D006474:Hemorrhagic Disorders / Q000175:diagnosis* / Q000453:epidemiology; D006801:Humans; D008297:Male; D013925:Thromboplastin
chemical_list: D013925:Thromboplastin