An e-cigarette aerosol is the same as the vapour that is produced by a vape pen or e-cigarette
Furthermore, the illegal status of e-cigarettes in Thailand could have influenced participants willingness to disclose their actual usage, potentially introducing response bias

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Useful Car Cigarette Socket to Alligator Clips cable from PMD Way with free delivery
Retrieved 11 August 2022
Rechargeable kits, including e-liquid refills, were sold at all stores, and disposable e-cigarettes were sold at 54.0% of the stores