Figure 4.

Prevalence of broadband (Ref.[40],[41]modified). High-speed and high-capacity fiber-optic communications have been spreading throughout the world. There are differences between countries in the kind and level of infrastructure. Japan had a lower cost per 1Mbps compared with other countries.

Nakayama et al. Diagnostic Pathology 2012 7:177   doi:10.1186/1746-1596-7-177
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