Factors associated with one year retention to methadone maintenance treatment program among patients with heroin dependence in China
Substance Abuse Treatment Prevention and Policy (2014) - Comment
pubmed: 24565169  doi: 10.1186/1747-597x-9-11  issn: 1747-597x 

Haifeng Jiang, Yun Han, Jiang Du, Fei Wu, Ruimin Zhang, Huaihui Zhang, Jun Wang, Zhirong Zhou, Yih-Ing Hser, Min Zhao