Hydroxyurea for sickle cell anemia what have we learned and what questions still remain? Curr Opin Hematol... 라나 S, 휴스턴 PE, 왕 WC, 아이어 RV, 골드스미스 J, 카셀라 JF 외. Hydroxyurea and growth in young children with sickle cell disease.