Tiffany A Williams

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Previous studies of medical outpatients have documented a high prevalence of depression that is often unrecognized by primary physicians. However, the subjective methodologies of most of these studies limit their quantitative and comparative usefulness. By contrast, in the present study, 526 medical outpatients completed a self-report questionnaire, the(More)
Gastrointestinal (GI) bleeding in infants and children provokes alarm in parents, and often anxiety in pediatricians. While this clinical situation has not changed over the years, advances in endoscopy and radiology, as well as new therapeutic modalities allow more accurate identification of the cause of bleeding and more effective treatment. Although the(More)
Caloric restriction has consistently been shown to extend life span and ameliorate aging-related diseases. These effects may be due to diet-induced reactive oxygen species acting to up-regulate sirtuins and related protective pathways, which research suggests may be partially inhibited by dietary anti-oxidant supplementation. Because caloric restriction is(More)
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