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

Puff toporgrapy is often measured uisng Smoking Machines. Information about Devices are reperesnted using the SDTM Medical Devices Domian.  These domains represent information about devices and not study subject or the trial itself