Comparison of erector spinae plane block with intra-thecal morphine for post-operative analgesia in patients undergoing surgery for gynaecological malignancies: a randomised controlled trial. - Aggarwal, Aarushi; Singh, Rahil; Bhalotra, Anju R.; Kerai, Sukhyanti; Singh, Snigdha (Indian Journal of Gynecologic Oncology, 2026)