microbial exposures. We evaluated the explanatory power and positive and negative predictive values (PPV and NPV, respectively) of home characteristics in their associations with GNB, gram-positive bacteria (GPB), and fungi.

Materials and Methods
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Study cohort
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The Epidemiology of Home Allergens and Asthma Study is an ongoing longitudinal birth-cohort study of the effects of environmental exposures on the risk of allergy and asthma in children born to parents with histories of allergies and/or asthma ([@b13-ehp-119-189]). The study was approved by the institutional review board of Brigham and Women's Hospital. We obtained written informed consent from the primary caregivers. Screening and recruitment of the families was conducted between September 1994 and June 1996. A detailed description of subject recruitment and early-life sampling for endotoxin and allergens in the home has been published previouslythe visual computing industry's new flagship technology - the NVIDIA Quadro K6000 GPU , the fastest and most capable GPU ever built. NVIDIA today also launched a new line of professional graphics GPUs for mobile workstations , delivering the highest levels of performance and graphics memory ever available on mobile platforms.The Quadro K6000 GPU delivers five-times higher compute performance and nearly double the graphics capability of its predecessor, the NVIDIA Quadro 6000 GPU, and features the world's largest and fastest graphics memory.Combining breakthrough performance and advanced capabilities in a power-efficient design, the Quadro K6000 GPU enables leading organizations such as Pixar, Nissan, Apache Corporation and the Weather Channel's WSI division to tackle visualization and analysis workloads of unprecedented size and scope.The Quadro K6000 GPU is based on the