Magnetic resonance imaging detection of avscular necrosis of the bone in children receiving intensive prednisone therapy for acute lymphoblastic leukemia or non-Hodgkin lymphoma. - Ribeiro,R.C.; Fletcher,B.D.; Kennedy,W.; Harrison,P.L.; Neel,M.D.; Kaste,S.C.; Sandlund,J.T.; Rubnitz,J.E.; Razzouk,B.I.; Relling,M.V.; Pui,C.H. (Leukemia, 2001)