CONCUSSIONS: Identification, Effects, and Treatment Sport-Related Concussion in Children and Adolescents Pediatric Head Trauma: A Review and Update Concussion Incidence and Trends in 20 High School Sports Removal From Play After Concussion and Recovery Time Parent-Child Agreement on Postconcussion Symptoms in the Acute Postinjury Period Persistent Postconcussion Symptoms After Injury Collaborative Care for Adolescents With Persistent Postconcussive Symptoms: A Randomized Trial SPORTS INJURIES AND CONCERNS The Sports Participation Evaluation Sports Injuries Infectious Diseases Associated With Organized Sports and Outbreak Control Promotion of Healthy Weight-Control Practices in Young Athletes The Female Athlete Triad Tackling in Youth Football Soccer Injuries in Children and Adolescents RISKS AND BENEFITS OF SPORTS AND PHYSICAL ACTIVITY Sports Specialization and Intensive Training in Young Athletes Sport Specialization and Risk of Overuse Injuries: A Systematic Review With Meta-analysis Organized Sports for Children, Preadolescents, and Adolescents Resistance Training for Children and Adolescents Physical Activity Assessment and Counseling in Pediatric Clinical Setting Physical Activity and Trajectories of Cardiovascular Health Indicators During Early Childhood Childhood Sports Participation and Adolescent Sport Profile Nonmedical Prescription Opioid and Heroin Use Among Adolescents Who Engage in Sports and Exercise.