Dr S. Shanthini, Dr R. Stalin, Dr S. Kamakshi. Comparison of Ultrasound-Guided Pecto-Intercostal Fascial Plane Block and Transversus Thoracic Muscle Plane Block for Post-Operative Analgesia in Cardiac Surgery: A Prospective Randomised Double-Blind Study. IJPRT 2026, 16, 5446-5453.