Association of Perioperative Use of Epidural Analgesia with Disease Free Survival in Epithelial Ovarian Cancer: A Retrospective Cohort Observational Study with Propensity Score Matched Analysis - Balakrishnan, Kalpana; Chockalingam, Punitha; Ramasamy, Thendral; Venkateswaran, Meenakshi; Sundaram, Madhupriya; Sridevi, Veluswami (Archives of Anesthesiology and Critical Care, 2022)