Quadratus Lumborum Block Versus Transversus Abdominis Plane Block for Postoperative Pain After Cesarean Delivery: A Randomized Controlled Trial. Blanco R, Ansari T, Riad W, Shetty N. Reg Anesth Pain Med. 2016 Nov/Dec;41(6):757-762. 76 patients scheduled for elective cesarean delivery under spinal anesthesia to receive the quadratus lumborum block or the transversus abdominis plane block for