BIBLIOGRAFIA

1. Sharp JF. Br Med J 1990; 301:1251–3.
2. Guest JFQ. J Med 2004; 97:477–488.
3. Suresh Kumar et al. Journal of Surgery Pakistan (International) 13 (3) July - September 2008
4. Macknin ML. Clin Pediatrics 1994; 33:14–18.
5. Roland PS. Otolaryngology–Head and Neck Surgery (2008) 139, S1-S21.
6. McCarter DF. Am Fam Physician 2007;75:1523-28, 1530.