Michael O Nguyen

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BACKGROUND & AIMS During the natural course of chronic hepatitis B virus infection, a small proportion of patients experience hepatitis B surface antigen (HBsAg) seroclearance. However, the long-term clinical outcomes of this process are not well established. METHODS Thirty-five patients with chronic hepatitis B, followed between 1976 and 2008 at a(More)
In this paper, we describe our prototype of an ultrasound guidance system to address the need for an easy-to-use, cost-effective, and portable technology to improve ultrasound-guided procedures. The system consists of a lockable, articulating needle guide that attaches to an ultrasound probe and a user-interface that provides real-time visualization of the(More)
OBJECTIVE Although the prevalence of obesity is increasing rapidly both nationally and internationally, few studies have analyzed outcomes among obese patients undergoing cranial neurosurgery. The goal of this study, which used a nationwide data set, was to evaluate the association of both obesity and morbid obesity with treatment outcomes among patients(More)
BACKGROUND/PURPOSE Phototherapy utilization has declined over the last 20 years despite its efficacy and cost-effectiveness. Adequacy of phototherapy training in residency may be a contributing factor. The purpose of this study was to evaluate perceptions of U.S. dermatology residency program directors (PDs) regarding the effectiveness of their programs'(More)
Over the years, a number of studies have demonstrated an increase in gender and ethnic diversity among US physicians. Despite substantial progress in eliminating gender and racial inequities in the field of medicine, women and ethnic minorities are still underrepresented among medical faculty at academic institutions. This study aims to describe the trends(More)
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