title: Improving the validity of self-reported sexual behavior:  no easy answers.
authors: Ralph J
authors: RJ
authors: DiClemente
authors: Andrea L
authors: AL
authors: Swartzendruber
authors: Jennifer L
authors: JL
authors: Brown
mesh_terms: D017280:Condoms / Q000706:statistics & numerical data*; D037001:Directive Counseling; D005260:Female; D006801:Humans; D017430:Prostate-Specific Antigen / Q000032:analysis*; D060737:Reproductive Tract Infections; D012746:Sexual Abstinence; D012749:Sexually Transmitted Diseases / Q000517:prevention & control*; D047568:Unsafe Sex / Q000517:prevention & control* / Q000706:statistics & numerical data*
chemical_list: D017430:Prostate-Specific Antigen