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"Efficacy of voluntary HIV-1 counselling and testing in individuals and couples in Kenya, Tanzania, and Trinidad: a randomised trial. The Voluntary HIV-1 Counseling and Testing Efficacy Study Group". Lancet. 356 (9224): 103–112. 2000-07-08. doi:10.1016/s0140-6736(00)02446-6. ISSN0140-6736. PMID10963246. S2CID10740238.
"Efficacy of voluntary HIV-1 counselling and testing in individuals and couples in Kenya, Tanzania, and Trinidad: a randomised trial. The Voluntary HIV-1 Counseling and Testing Efficacy Study Group". Lancet. 356 (9224): 103–112. 2000-07-08. doi:10.1016/s0140-6736(00)02446-6. ISSN0140-6736. PMID10963246. S2CID10740238.