Ahmad, S. I., S. Yaseen, W. A. Wani, S. Yaqoob, and N. Bhagat. “Perfusion Index Monitoring and Its Correlation With Outcome in Neonates Undergoing Surgery”. International Journal of Contemporary Pediatrics, vol. 12, no. 2, Jan. 2025, pp. 254-9, doi:10.18203/2349-3291.ijcp20250093.