Assertion: thalassemia's parent | /r/HasAspect | alpha thalassemia trait
Facets:
Source sentences:
text: If both parents have alpha thalassemia trait or beta thalassemia trait, they have a one in four chance of having a child with thalassemia disease.
text: Individuals who have this mutation have normal red blood cell indices, but can have children who have Hgb H-Constant Spring disease if the other parent has alpha thalassemia trait (--/αα).