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Investigation of Repeat Client Drop-Out and Re-Enrolment Cycles in Fourteen Methadone Maintenance Treatment Clinics in Guangdong, China
- Lei Zhang,
- Xia Zou,
- Di Zhang,
- Xiaoling Li,
- Peizhen Zhao,
- Li Ling
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- Published: October 20, 2015
- https://doi.org/10.1371/journal.pone.0139942