Bharath, M., J. R. Galagali, A. K. Mishra, A. Mallick, and E. Nikhilesh. “Prophylactic Use of Antibiotics As Per SIGN 104 Guidelines Versus Routine Antibiotic Prophylaxis for Prevention of Surgical Site Infection in Clean and Clean Contaminated ENT Surgical Procedures: A Comparative Study”. International Journal of Otorhinolaryngology and Head and Neck Surgery, vol. 6, no. 1, Dec. 2019, pp. 106-11, doi:10.18203/issn.2454-5929.ijohns20195698.