title: The sickle cell disease spectrum: common types and variant forms.
mesh_terms: D000293:Adolescent; D000328:Adult; D000755:Anemia, Sickle Cell / Q000145:classification*; D002648:Child; D005260:Female; D006801:Humans; D007223:Infant; D011247:Pregnancy; D012805:Sickle Cell Trait / Q000145:classification* / Q000235:genetics / Q000628:therapy