One study with sibling-pairs discordant for maternal smoking during pregnancy ( n = 1,783), for example, found that PTE predicted progression from weekly smoking to nicotine dependence (OR = 1.4 [95% CI = 1.2, 1.8]), but did not predict progression to marijuana dependence in the exposed sibling [158]
Besides, the car lighter splitter built with 3 independent On/Off switches for each cigarette socket
DOC (Doctors Ought to Care) joined the effort in the 1980s, and beginning in 1996 the California Medical Associations Pharmacy Partnership Project campaigned to get independent pharmacies to drop tobacco products
National center for chronic disease prevention and health promotion (US), office on smoking and health (US)
Also, split your supply strategically
Trends in prescribing of nicotine replacement therapy to pregnant women in primary care in england