1. The Severity of Illness Index as a severity adjustment to diagnosis-related groups;Horn SD;Health Care Financ Rev,1984
2. Peter G. Peterson Foundation. why are Americans paying more for healthcare?. (2020). Accessed: July 12, 2020: https://www.pgpf.org/blog/2020/04/why-are-americans-paying-more-for-healthcare.
3. Joy K. when should a child's tonsils come out. (2018). Accessed: July 28, 2020: https://healthblog.uofmhealth.org/childrens-health/tonsillectomy-and-adenoidectomy-surgery-perfcon.
4. Evaluation of the utility and cost-effectiveness of obtaining histopathologic diagnosis on all routine tonsillectomy specimens;Younis RT;Laryngoscope,2001
5. Tonsillectomy by cold dissection and coblation techniques: a prospective comparative study;Muthubabu K;Indian J Otolaryngol Head Neck Surg,2019