In total, 42 people were interviewed for this report
9.4 Advertising Matter 9.4.1 Restrictions Any advertising, promotional, or sales matter that solicits or induces the mailing of any article described in PUB 52 as hazardous, restricted, or perishable is nonmailable except that such matter relating to controlled substances, radioactive materials, restricted liquids and powders, battery-powered devices, odd-shaped items in envelopes, and switchblade and ballistic knives, as described in PUB 52, is mailable if it contains packaging instructions and any other mailing limitations under PUB 52, 508.9.0, and 508.10.0 (18 USC 1716)
Geneva, 1997
100% TOBACCO & NICOTINE FREE: Experience the satisfaction of smoking without the presence of tobacco and nicotine
How to spot an e-cigarette
Control 4 (1), 5761 (1995)