E Cigarettes and Vaping PPAC Central Question: How do the ingredients in e cigarettes and vaporizers affect respiratory health? Los Angeles ENT Doctors ENT Specialists Top Surgeons Electronic Cigarette Use in US Adults at Risk for or with COPD: Analysis from Two Observational Cohorts Journal of General Internal Medicine Springer Nature Link Scholarly Article or Book Chapter Similarity of sputum mediator signatures between e cigarette users and COPD depends on GOLD stage and type of e cigarette: a pilot study ID: cj82kq34p Carolina