Research study found that the demographic characteristics of respondents, mainly including different career and income. There is no disease that can affect the behavior of the four different bia. Mobile phone usage habits that risk of disease, it is no surprise the four bia: 1) carry cellular phones all 2) focused on the use of mobile phones, 3) never disable the handset. Such behaviour is causing health problems and symptoms, which are the eyes and the exercise will help reduce handset usage habits, risk of disease, it is no surprise the four bia.
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