%0 Journal Article %T The role of program directors in treatment practices: The case of methadone dose patterns in U.S. outpatient opioid agonist treatment programs %A Frimpong, Jemima A. %A Shiu-Yee, Karen %A D'Aunno, Thomas %D 2017 %R 10.1111/1475-6773.12558 %P 1881-1907 %J Health Services Research %V 52 %I 5 %2 ISSN: 0017-9124