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 FacilitationMotivationRisk-TakingCriminologyStudentsPsychotropic DrugsDesigner DrugsSubstance Withdrawal SyndromeSmokingRelaxationCocaine-Related DisordersSocial EnvironmentCannabidiolPhencyclidine AbuseLongitudinal StudiesJuvenile DelinquencyUnited StatesReceptor, Cannabinoid, CB1UniversitiesSibling RelationsBinge DrinkingAlcoholismQuestionnairesReceptors, CannabinoidNew York City