The primary source of information on drug seizures was the replies to the annual reports questionnaire, part III (Illicit supply of drugs), submitted by Governments for 2002 and previous years.
在药物截获方面的主要资料来源是由各国政府提交的对《年度报告调查表》第三部分（非法药物供应）2002年及以前各年的答复。