Manuel Gallardo

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Injection drug users (IDUs) may be denied purchase of sterile syringes even where purchase without a prescription is legal. This study examined barriers to over-the-counter (OTC) syringe purchase among IDUs in Tijuana, Mexico. A quantitative survey and subsequent focus groups were used to quantify barriers to purchase, identify their correlates and provide(More)
BACKGROUND Sterile syringe access is a critical component of HIV prevention programs. Although retail pharmacies provide convenient outlets for syringe access, injection drug users (IDUs) may encounter barriers to syringe purchase even where purchase without a prescription is legal. We sought to obtain an objective measure of syringe access in Tijuana,(More)
We examined whether the use of three-dimensional (3D) simulations in an off-field offside decision-making task is beneficial compared to the more widely available two-dimensional (2D) simulations. Thirty-three assistant referees, who were all involved in professional football, participated in the experiment. They assessed 40 offside situations in both 2D(More)
We analyzed data from a longitudinal cohort study of persons who inject drugs (PWID) in Tijuana, Mexico, to explore whether cigarette smoking increases the risk of interferon gamma release assay (IGRA) conversion. PWID were recruited using respondent driven sampling (RDS). QuantiFERON-TB Gold In-Tube (QFT) assay conversion was defined as interferon-gamma(More)
Estudio de la vía auditiva central por medio de las respuestas evocadas auditivas del tronco encefálico (ABR), en niños con retraso en el lenguaje STUDY OF THE CENTRAL AUDITIVE PATHWAY BY ENCEPHALIC TRUNK EVOKED AUDITORY RESPONSES (EAR) IN CHILDREN WITH LANGUAGE RETARD SUMMARY OBJECTIVE: To determine the functional integrity of the brainstem auditory(More)
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