tokens: We conclude that the CYA cardiotoxicity correlates with CYA dosage as calculated by body surface area , and that patients with aplastic anemia and immunodeficiencies can be effectively prepared for bone marrow grafting at a CYA dose of 1 . 55 g / m2 / d for four days with a lower incidence of cardiotoxicity than patients whose CYA dosage is calculated based on weight .