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They are a popular choice for their simplicity and convenience, making them ideal for beginners and vapers on-the-go
Heres the simple playbook: This approach is practical for smaller operators: place one purifier in the main living area and another in the bedroom that smells the most
Dividers in case
Ethics approval and consent to participate The authors confirm to follow the study protocol that was approved by the Ethics Committee of IRB-Hanoi Medical University, Vietnam, for ethics in biomedical research implementation (Approval number NCS33/HMU-IRB dated 29 March 2019) and the IRB-International University of Health and Welfare, Japan (Approval number 21-Ig-92 dated on 21 August 2021)
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