The questionnaire's Portuguese version proved to be easily understandable showing good semantic validation. Nevertheless, further studies should address other psychometric characteristics of this instrument.

The findings of this study indicated that the presence of recurrent MDD with suicidal ideation is associated with differences in inflammatory chemokines when compared to those without suicidal ideation.

CPN is associated with cognitive impairments in crack cocaine-dependent women specifically regarding EFs and working memory tasks.

This study is the first to investigate HPA axis functioning using hair cortisol concentrations among crack cocaine-dependent users. It is a promising strategy to assess stress load in substance abusers.

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Adult female crack cocaine users and female adolescents took similar risks during risky decision-making scenarios where feedback about their own performance was absent. However, when participants were provided with such feedback, it modulated risk-taking behaviors in crack cocaine users but not in adolescents.