Metcalf T, Sielatycki JA, Schatzman N, Devin CJ, Goldstein JA, Hodges SD. Intrathecal Fentanyl With a Myofascial Plane Block in Open Lumbar Surgeries: A Case Series. Oper Neurosurg (Hagerstown). 2022 06 01; 22(6):387-390.