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Marijuana Abuse
Mental Disorders
Multicenter Studies
Psychiatric Status Rating Scales
Randomized Controlled Trials
Patient Dropouts
Risk Factors
Internet
Motivation
Ambulatory Care
Psychotherapy, Brief
Mass Screening
Emergency Services, Psychiatric
Adolescent Health Services
Questionnaires
Adolescent Behavior
Professional-Patient Relations
Emergency Service, Hospital
Suicidal Ideation
Philadelphia
Co-Publications
7
4
2
1
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