Interview questions used to gather sexual history information in the Black and White Americans Study.
Interview questions used to gather sexual history information in a study of HPV infection in Costa Rica.
Questions used to gather information on sexual practices and HIV exposure in the D.C. Gays Study (long form, self-administered).
Questions used to gather sexual history information in the Danish Postal Study (long form, self-administered).
Questions used to gather history of sexually transmitted disease in the D.C. Gays Study (short form, self-administered).