VEENA ARVIND GANERIWAL; JUILEE AJIT SALVI. Comparative Study of Injection Butorphanol Versus Injection Fentanyl with Injection Ropivacaine in Ultrasound Guided Supraclavicular Block to Evaluate Sensory and Motor Block Characteristics. Journal of Evolution of Medical and Dental Sciences, [S. l.], v. 13, n. 5, p. 117–123, 2024. DOI: 10.14260/jemds.v13i5.634. Disponível em: https://jemds.in/index.php/jemds/article/view/634. Acesso em: 7 feb. 2025.