Affiliation: | 1. Department of Pediatrics, Center for Cancer and Blood Disorders, Children's Hospital Colorado, University of Colorado Denver, Aurora, Colorado;2. Department of Ophthalmology, University of Colorado Denver, Aurora, Colorado;3. Department of Pathology, Children's Hospital Colorado, University of Colorado Denver, Aurora, Colorado;4. Sickle Cell Treatment and Research Center, Children's Hospital Colorado, University of Colorado Denver, Aurora, Colorado |