Fig 1.
Figure modified from Wikipedia BlankMap-World6.svg, available here: http://en.wikipedia.org/wiki/File:BlankMap-World6.svg; and from Figure 4 and data in Monasta et al., reference 4.
Fig 2.
Right ear showing subtotal perforation, incus erosion, and chronic inflammation of the middle ear mucosa with mucoid drainage.
Image courtesy of Dr. Jeffrey T. Vrabec.