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. 2018 Jan 18;13(1):e0190941. doi: 10.1371/journal.pone.0190941

Table 1. Study settings and sample size.

Level Settings Site Name Type of services Sample size
District (urban) Tu Liem District District Health Centre MMT+ HCT + ART + GH* 201
District (urban) Long Bien District District Health Centre MMT+ HCT + ART + GH* 99
District (urban) Ha Dong District Regional Polyclinic MMT+ GH* 210

* MMT: Methadone maintenance treatment; HCT: HIV counseling and testing; ART: antiretroviral therapy; GH: General health care