A new study published in Nicotine & Tobacco Research found that those using e cigarettes alone were more than twice as likely to develop COPD than people who didn't use any tobacco products, COPD and Vaping: Understanding the Risks and Long Term Effects Rauchhistorie hat groen Einfluss auf Studienergebnisse Frhere Studien zum COPD Risiko durch E Zigaretten werden in Frage gestellt VDEH COPD und das Rauchen von Zigaretten SMOKO E Cigarettes