11 -

11 - Aass N, De Mulder PH, Mickisch GH, Mulders P, Van Oostrom AT, Van Poppel H, Fossa SD. De Prijck L, Sulvester RJ, Randomized phase II/III trial of interferon Alfa-2a with and without 13-cis-retinoic acid in patients with progressive metastatic renal cell Carcinoma: the European Organisation for Research and Treatment of Cancer Genito-Urinary Tract Cancer Group (EORTC 30951) J. Clin Oncol. 2005; 23: 4172-8.