[1] Long Beach VA Hosp, SATP Buprenorphine Clin, Long Beach, CA USA
[2] Univ British Columbia, Vancouver, BC, Canada
[3] RAND Drug Policy Res Ctr, Santa Monica, CA USA
[4] Cooper Univ Med Ctr, Camden, NJ USA
[5] Icahn Sch Med Mt Sinai, New York, NY 10029 USA