| http://www.w3.org/ns/prov#value | - Respondents who answered just to find out if infected, routine check-up, doctor referral, "sex partner referral, because of pregnancy, because I am at risk or other were considered to have been tested voluntarily; those who were tested because of illness, hospitalization or surgery, or for insurance, employment, a marriage license, military service, immigration or occupational exposur
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