“Worse Health-Related Quality of Life in Dual E-Cigarette and Cigarette Use Compared to Exclusive Cigarette Use or Long-Term Cessation in COPD Individuals”

https://pubmed.ncbi.nlm.nih.gov/38113525

Individuals with COPD who use both e-cigarettes and cigarettes have worse health-related quality of life compared to exclusive cigarette use or long-term cessation, highlighting the importance of complete smoking cessation.