Sickle cell disease study gets started.
D000293:Adolescent; D000328:Adult; D000755:Anemia, Sickle Cell / Q000175:diagnosis*; D002648:Child; D002675:Child, Preschool; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D012106:Research