Johnson, Robert L., Jr.2016-06-012016-06-011960-01-21https://hdl.handle.net/2152.5/3179Detailed 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 RoundsPulmonary EmphysemaOther685954