1.Cases were collected from epidemic reporting system, EHF case questionary and laboratory rate.
病例姿料来源于疫报告系统、EHF个表和实验室结果。
2.Methods Survey 608 residents, who are above 35-year-old in Songbo town of Shen Nongjia area, with unific survey papers;and give them physical examination.
方法 采统一表对神农架林区松柏镇 35 岁以上居民进行问卷及体检。
3.A survey on 155 opioid abusers and their polydrug abuse was carried out with a questionnaire designed by National Institute on Drug Dependence.