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Feasibility and Acceptability of Global Positioning System (GPS) Methods to Study the Spatial Contexts of Substance Use and Sexual Risk Behaviors among Young Men Who Have Sex with Men in New York City: A P18 Cohort Sub-Study
- Dustin T. Duncan,
- Farzana Kapadia,
- Seann D. Regan,
- William C. Goedel,
- Michael D. Levy,
- Staci C. Barton,
- Samuel R. Friedman,
- Perry N. Halkitis
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- Published: February 26, 2016
- https://doi.org/10.1371/journal.pone.0147520