1. Epidemiology and natural history of secretory otitis;Tos;Am J Otol,1984
2. Epidemiology;Casselbrant,2003
3. Stool S.E., Berg A.O., Berman S., Carney C.J., Cooley J.R., Culpepper L., et al. Otitis media with effusion in young children. Clinical practice guideline, Number 12. AHCPR Publication No. 94-0622. Rockville, MD: Agency for Health Care Policy and Research, Public Health Service, US Department of Health and Human Services; 1994.
4. The natural history of otitis media with effusion–a three-year study of the incidence and prevalence of abnormal tympanograms in four South West Hampshire infant and first schools;Williamson;J Laryngol Otol,1994
5. Natural history of untreated otitis media;Rosenfeld;Laryngoscope,2003