Erlotinib Completed Phase 2 Trials for Ovarian Endometrioid Adenocarcinoma / Ovarian Serous Cystadenocarcinoma / Stage III Ovarian Epithelial Cancer / Brenner Tumor / Fallopian Tube Cancer / Ovarian Undifferentiated Adenocarcinoma / Ovarian Clear Cell Cystadenocarcinoma / Stage IV Ovarian Epithelial Cancer / Ovarian Mucinous Cystadenocarcinoma Treatment