Subjects: HIV prevention; SUBSTANCE abuse treatment; INTRAVENOUS drug abuseMEXICO; UNITED States
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Subjects: CHEMICAL precursors; COCAINE abuse; PERMANGANATESUNITED States; MEXICO
Subjects: ANXIETY; CONFIDENCE intervals; HISPANIC AmericansMEXICO; UNITED States
Subjects: CHI-squared test; CONFIDENCE intervals; FISHER exact testCALIFORNIA; MEXICO; UNITED States
Subjects: UNDOCUMENTED immigrants; CONFIDENCE intervals; EPIDEMIOLOGYMEXICO; ARIZONA
Subjects: *ECONOMICS; *CONFIDENCE intervals; *OBESITYMEXICO
Subjects: *MEDICAL care use; *AGE distribution; *COMPARATIVE studiesMEXICO; UNITED States; TEXAS
Subjects: *MEDICAL care; *DIABETES; *BLOOD plasmaMEXICO; UNITED States