| Characteristic | Critical threat | Important threat | Not important threat |
|---|---|---|---|
| - | - | - | - |
| - | - | - | - |
| - | - | - | - |
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Source
Release date
February 2015
Region
China, United States
Survey time period
Februrary 8 to 11, 2015
Number of respondents
837 respondents
Age group
18 years and older
Special properties
among residents of all 50 U.S. states and the District of Columbia
Method of interview
Telephone interview
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