ATP Binding Cassette Transporter, Subfamily B, Member 1/metabolism; Biomarkers, Tumor/metabolism; Gene Expression Regulation, Neoplastic; Neoplasms, Cystic, Mucinous, and Serous/genetics; Ovarian Neoplasms/genetics; RNA, Neoplasm/metabolism; Adult; Aged; Aged, 80 and over; Antineoplastic Combined Chemotherapy Protocols/therapeutic use; BRCA1 Protein/genetics; Cyclin-Dependent Kinase Inhibitor p16/genetics; Disease Progression; Drug Resistance, Multiple/genetics; Estrogen Receptor alpha/genetics; Female; Follow-Up Studies; Humans; Insulin-Like Growth Factor Binding Protein 3/genetics; Insulin-Like Growth Factor II/genetics; Middle Aged; Neoplasm Staging; Neoplasms, Cystic, Mucinous, and Serous/drug therapy; Neoplasms, Cystic, Mucinous, and Serous/metabolism; Neoplasms, Cystic, Mucinous, and Serous/surgery; Ovarian Neoplasms/drug therapy; Ovarian Neoplasms/metabolism; Ovarian Neoplasms/surgery; Prognosis; RNA, Messenger/genetics; Retrospective Studies; Reverse Transcriptase Polymerase Chain Reaction; Survival Analysis; Treatment Outcome