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. Author manuscript; available in PMC: 2014 Nov 1.
Published in final edited form as: Drug Alcohol Depend. 2013 Jul 1;133(1):80–85. doi: 10.1016/j.drugalcdep.2013.05.030

Figure 2A-C.

Figure 2A-C

Figure 2A-C

Figure 2A-C

Treatment retention as a function of opiate status of urine toxicology throughout duration of trial: all opiate-negative (1) vs. any opiate-positive urine (0). Each figure represents the survival in twice weekly study visits over the 8-week trial for participants who tested the blockade (0) vs. those who did not test (1).