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APA Citation
Sharif, B., Nosyk, B., Sun, H., Marsh, D. C., & Anis, A. (2013). changes in the Characteristics and Levels of Comorbidity Among New Patients Into Methadone Maintenance Treatment Program in British Columbia During Its Expansion Period From 1998–2006. Substance use & misuse, 48, 671–682. http://access.bl.uk/ark:/81055/vdc_100051762106.0x000025