Unknown2016-05-132016-05-131961-05-04https://hdl.handle.net/2152.5/3141Detailed formal protocol with illustrations and extensive bibliography. Note: Some information has been redacted in the publicly-available version due to privacy issues. For questions, contact archives@utsouthwestern.edu.enGrand RoundsTeaching RoundsAir PollutantsAir PollutionParticulate MatterRespiratory Tract DiseasesOther686168