Chaudhary, Ajay Kr, Dinesh Singh, Jai Shri Bogra, Sulekha Saxena, Girish Chandra, Shashi Bhusan, and Prithvi Kr Singh. 2019. “Thoracic Epidural for Post-Thoracotomy and Thoracomyoplasty Pain: A Comparative Study of Three Concentrations of Fentanyl With Plain Ropivacaine”. Anaesthesia, Pain & Intensive Care, January, 22-27. https://apicareonline.com/index.php/APIC/article/view/476.