Position and integrity of tympanic membrane in 31 Australian Aboriginal children following a new diagnosis of acute otitis media. Shaded = discharge present; C = chronic perforation; P = acute perforation; B = bulging; n = neutral; R = retracted; 0 = no bulging; 1 = mild bulging; 2 = moderate bulging; 3 = marked bulging. * = past history of otorrhea.
Gibney et al. BMC Pediatrics 2005 5:16 doi:10.1186/1471-2431-5-16