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Division of labor is commonly observed in nature. There are several theories that suggest diversification in a microbial community may enhance stability and robustness, decrease concentration of… (More)
In recent years, use of electronic nicotine delivery systems (ENDS) has drastically increased, exceeding the prevalence of combustible tobacco use among youth in the USA.1 ENDS products are heavily… (More)
INTRODUCTION Alternative Nicotine Delivery Systems (ANDS) such as e-cigarettes are battery-powered devices that aerosolize nicotine and other substances to simulate smoking without using tobacco.… (More)
BACKGROUND Assessing the frequency and intensity of e-cigarette use presents special challenges beyond those posed by cigarette use. Accurate measurement of e-cigarette consumption, puff duration,… (More)
Introduction Despite smoker interest in e-cigarettes as a harm reduction or cessation aid, many smokers prematurely discontinue vaping after trying a product. This study explored the role of early… (More)
BACKGROUND Rather than providing participants with study-specific data collection devices, their personal mobile phones are increasingly being used as a means for collecting geolocation and… (More)
Complex and interacting selective pressures can produce bacterial communities with a range of phenotypes. One measure of bacterial success is the ability of cells or populations to proliferate while… (More)
[This corrects the article DOI: 10.2196/mhealth.8123.].
INTRODUCTION Evidence indicates that one reason cigarette smokers value e-cigarettes is the ability to use them in places where smoking is not permitted. We sought to: 1) explore adult daily smokers'… (More)