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LakeAir residential models have top-end noise levels below the 70 decibel threshold

Mice exposed to PG/VG aerosols for 4 months did show altered lipid content in the lung, disrupting surfactant homeostasis

The methodology was also criticized because a normalization to either the total number of users or the frequency of drug use was not conducted, which might have biased the result toward the harms of opiate use 14 and may have underrepresented the harms of tobacco 15