Study Status: Completed
Recruit Status: Unknown status
Study Type: Interventional
Official Title: Barriers and Effect of Optimizing Intervention Protocols for Heroin Dependence in Community-based Methadone Maintenance Treatment (MMT): a Cohort Study
Brief Summary: The purpose of this study is to explore barriers and determine whether optimizing protocol is effective in the treatment of heroin dependence in community-based MMT clinics.