[1] Univ Colorado, Div Hosp Med, Dept Med, Aurora, CO USA
[2] Denver Hlth, Div HIV STI Viral Hepatitis, Publ Hlth Inst, Denver, CO 80203 USA
[3] Harm Reduct Act Ctr, Denver, CO USA
[4] Univ Colorado, Dept Med, Div Infect Dis, Aurora, CO USA
[5] Denver Hlth, Publ Hlth Inst, 601 Broadway,8th Floor,MC 2800, Denver, CO 80203 USA