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Puff topography is typically considered data about the subject exposure to the test product. As these data represent information about study product exposure, the data is represented in the Exposure (EX) domain. More information on the Exposure domain is found here. Exposure Assessments During a Trial 

Puff topography is often measured using Smoking Machines. Information about Devices are represented using the SDTM Medical Devices Domain. These domains represent information about devices and not study subject or the trial itself.

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