Full text: Available Index: LILACS (Americas) Main subject: Retinal Diseases / Sickle Cell Trait / Hemoglobin, Sickle / Anemia, Sickle Cell Limits: Humans Language: English Journal: Rev. bras. hematol. hemoter Journal subject: Hematology Year: 2014 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Estadual de Campinas/BR