The article you requested is

Controversial Issues in Child Psychiatry

J Clin Psychiatry 2011;72(6):835

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This section of Focus on Childhood and Adolescent Mental Health provides some answers to controversial topics.

Internet use is a core activity for teenagers, and parents frequently are concerned about the extent of Internet use by their teenagers. Liu and colleagues conducted a survey of 3,560 high school students in Connecticut to determine the prevalence and health correlates of problematic Internet use.