SINGH, M.; KUMAR, S.; DIXIT, P.; SINGH, V.; VERMA, S.; SINGH, G. The effect of celecoxib on early postoperative cognitive dysfunction in elderly patients of fracture neck of femur: a prospective randomised double-blind study. Anaesthesia, Pain & Intensive Care, v. 25, n. 3, p. 287–294, 27 maio 2021.