Dmytriiev, D. V., E. O. Glazov, B. V. Zaletskyi, and K. Y. Dmytriieva. “Ultrasound-Guided Quadratus Lumborum Block Versus Caudal Block for Postoperative Analgesia in Children Undergoing Acute Appendicitis: A Comparative Study”. Pain Medicine, vol. 5, no. 4, Mar. 2021, pp. 23-29, doi:10.31636/pmjua.v5i4.4.