"C0281496"^^ . "Hydroxyurea/Tretinoin"^^ . _:b680797 . "Hydroxyurea/Tretinoin"^^ . _:b680797 . "ATRA/HUSYNCI" . "Therapeutic or Preventive Procedure"^^ . "Hydroxyurea/TretinoinPTNCI" . . _:b680798 . _:b680797 . _:b680798 . "C10806"^^ . _:b680798 . "Hydroxyurea_Tretinoin"^^ . _:b680797 . . _:b680798 .