A total of @ participants were randomly assigned to either ( @ ) a @-year intervention consisting of @ opportunities for a @-day detoxification with buprenorphine/naloxone ( BUP/NX ) combined with up to @ sessions of behavioral drug and risk counseling -LSB- short-term medication-assisted treatment ( ST-MAT ) -RSB- or ( @ ) thrice-weekly dosing for @ weeks with BUP/NX and up to @ counseling sessions -LSB- long-term medication-assisted treatment ( LT-MAT ) -RSB- followed by dose tapering .