Oct. 8, 2008— -- Surveys based on a random sample of respondents are subject to sampling error – a calculation of how closely the results reflect the attitudes ...
In 1995, the nerve gas sarin (O-isopropyl methylphosphonofluoridate) was used as a chemical weapon in a terrorist attack in Tokyo's subway 1,2. In 2001 and 2004, anthrax attacks and ricin incidents ...
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