Table 1.

Electronic database search strategy.

Step	Search Strategy
1	Meditation [tw] or relaxation [tw] or mindfulness [tw] or “breathing technique” [tw] or “breathing exercises” [tw]
2	Smoking [tw] or tobacco [tw] or caffeine [tw] or “substance-related disorder” [tw] or “drug abuse” [tw] or addiction [tw] or “drug dependence” [tw] or “drug habituation” [tw] or “drug usage” [tw] or “substance abuse” [tw] or “substance dependence” [tw] or “substance use” [tw] or alcohol [tw] or alcoholism [tw] or “street drugs” [tw] or cocaine [tw] or marijuana [tw] or marihuana [tw] or opioid [tw] or heroin [tw] or morphine [tw] or stimulant [tw] or ecstasy [tw] or nicotine [tw]
3	1 and 2