<prompt> Translate the following text to EnglishKwa mujibu wa ripoti hiyo, baadhi ya nadharia zilizotumiwa kuunda makadirio ya msingi zimepitishwa na kuidhinishwa na Baraza la Ushauri la Sayansi la EPA.  <response>: The majority of the analytical assumptions used to develop the Base Estimate have been reviewed and approved by EPAs Science Advisory Board SAB. 