An anonymous questionnaire was carried out and then following thd examination of HIV antibody by RWB or ELISA , and laboratory tests for other STD.
方法：所有人选的STD患者及男女性罪错者，采用匿名问卷方式，然后应用RWB或ELISA法对其进行HIV抗体和其他有关性病的实验室检测。
RWB