Bansal, P., J. Dureja, N. Aggarwal, and D. Chahal. “Ultrasound Guided Transversus Abdominis Plane (TAP) Block for Inguinal Surgery in a Case With Severe Kypho-Scoliosis and Pectus Excavatum”. Anaesthesia, Pain & Intensive Care, Jan. 2019, pp. 386-9, https://www.apicareonline.com/index.php/APIC/article/view/335.