Imatinib Terminated Phase 2 Trials for Stage II Ovarian Germ Cell Tumor / Stage III Malignant Testicular Germ Cell Tumor / Recurrent Malignant Testicular Germ Cell Tumor / Ovarian Dysgerminoma / Stage II Malignant Testicular Germ Cell Tumor / Recurrent Ovarian Germ Cell Tumor / Testicular Seminoma / Stage III Ovarian Germ Cell Tumor Treatment