| http://www.w3.org/ns/prov#value | - Since effects of male circumcision on HIV and other STIs may depend on whether men were circumcised before or after sexual debut, associations with biological outcomes were examined with circumcision status in three categories: ???non-circumcised???, ???circumcised at/after sexual debut??? or ???circumcised before sexual debut???, based on self-reported age at circumcision and age at sexual debut.
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