1. Cummings CW, Fredrickson JM, Harker LA et al (1998) Otolaryngology head and neck surgery, 3rd edn. Mosby-Yearbook, Inc., St. Louis
2. Fliss DM, Shoham I, Leiberman A et al (1991) Chronic suppurative otitis media without cholesteatoma in children in southern Israel: incidence and risk factors. Pediatr Infect Dis J 10(12):895–899
3. Settipane RA (2003) Rhinitis: a dose of epidemiological reality. Allergy Asthma Proc 24(3):147–154
4. Druce H (1998) Allergic and nonallergic rhinitis. In: Middleton E, Reed CE, Ellis EF, Adkinson NF Jr, Yunginger JW, Busse WW (eds) Allergy principles and practice, 5th edn. Mosby-Year Book, St Louis, pp 1005–1016
5. Smith JM (1971) A five-year prospective survey of rural children with asthma and hay fever. J Allergy 47:23–30