Misidentifications were common, with 2.47% confusing a USB drive, 8.18% a lighter, and 68.98% a metal pen for an e-cigarette (Supplementary file Figure S1B)
Global burden of disease due to smokeless tobacco consumption in adults: an updated analysis of data from 127 countries
(en) Butler NR, Goldstein H, Ross EM, Cigarette smoking in pregnancy: its influence on birth weight and perinatal mortality BMJ 1972;2:127-30
You may think the easy option here is to turn everyone away to avoid the possibility of them being a Visitor, but that leads to one of the special encounters you can come up against
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