https://www.mdedge.com/content/severe-hemoglobin-h-subtype-should-be-classed-itself
Severe Hemoglobin H Subtype Should Be Classed By Itself | MDedge
hemoglobin hseveresubtypeclassed
https://kidshealth.org/LurieChildrens/en/parents/blood-test-hba1c.html
Blood Test: Hemoglobin A1c (for Parents) - Ann & Robert H. Lurie Children's Hospital of Chicago
Doctors use a hemoglobin A1c (HbA1c) test to determine if your child's diabetes management plan needs to be adjusted.