The Archives of Pediatrics & Adolescent Medicine will publish a theme issue on mental health in August 2004. Our call for papers includes studies that provide new information on office screening for mental health problems, and guidance to practitioners on appropriate care and referral of patients with mental illness. We are especially interested in randomized trials that test new interventions, particularly those that can be provided by primary care physicians. For the best chance of consideration for this theme issue, papers should be received by January 1, 2004. Please consult our Web site (http://www.archpediatrics.com) for detailed instructions for authors.