But smoking is often integral to characters and their storylines
The four year extension gives the FDA time to come up with new standards that would prevent, for example, products from exploding in peoples faces
(2) reporting a serious, unstable psychiatric condition (e.g., bipolar disorder, schizophrenia), (3) reporting a serious, unstable physical health condition that would increase risk of study participation determined by medical history interview and review by study physician (e.g., past or present cardiac problems, respiratory problems, overnight hospitalization in the past 3 months), (4) current criteria for DSM-5 moderate or severe cannabis use disorder, (5) current use of other psychoactive substances confirmed by urine drug screening, unless prescribed and stable for 2 months, (6) living with someone who currently smokes menthol cigarettes, to reduce access to preferred cigarettes during the switching phase of the study, consistent with our pilot [19], (7) known allergy to PG/VG in e-liquid, (8) female participants will be excluded if they are currently pregnant, planning to become pregnant, breastfeeding, or unwilling to use an effective method of birth control for the duration of the study, (9) abnormal spirometry test, (10) if reporting recent cannabis vaping (past 90 days), additional exclusion will be any report of mild or greater EVALI-related symptoms (e.g., cough, shortness of breath, chest pain) without non-EVALI reasonable and proximal cause
Those who answered Yes to using an e-cigarette at least once were then asked if they now used e-cigarettes daily, some days, or not at all
The number indicate which relay and use for each circuit
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