Marijuana SmokingCannabisMedical MarijuanaMarijuana AbuseColoradoDrug and Narcotic ControlFamily ConflictPhytotherapyFamily RelationsConduct DisorderSubstance-Related DisordersSubstance Abuse Treatment CentersDronabinolUrban PopulationCross-Sectional StudiesCannabinoidsStreet DrugsSocial ConformityAdolescent BehaviorSubstance Abuse DetectionAlcohol DrinkingPeer GroupHallucinogensSocial FacilitationMotivationCriminologyRisk-TakingStudentsDesigner DrugsPsychotropic DrugsSubstance Withdrawal SyndromeSmokingRelaxationCocaine-Related DisordersSocial EnvironmentCannabidiolPhencyclidine AbuseLongitudinal StudiesJuvenile DelinquencyReceptor, Cannabinoid, CB1UniversitiesSibling RelationsBinge DrinkingUnited StatesAlcoholismReceptors, CannabinoidQuestionnairesNew York City