Zhang, Lei The Decade-Long Chinese Methadone Maintenance Therapy Yields Large Population and Economic Benefits for Drug Users in Reducing Harm, HIV and HCV Disease Burden. [electronic resource] - Frontiers in public health 2019 - 327 p. digital Publication Type: Journal Article ISSN: 2296-2565 Standard No.: 10.3389/fpubh.2019.00327 doi