Adolescent 1 Adult 1 Article 1 Athletic Injuries 1 Centers for Disease Control and Prevention (U.S.) 1 Child 1 Chronic Traumatic Encephalopathy 1 Female 1 Health Knowledge, Attitudes, Practice 1 Health Surveys 1 Humans Male 1 Middle Aged 1 Parents 1 United States 1 adolescent 1 adult 1 athlete 1 athletics 1 attitude to health child 1 child parent relation 1 chronic traumatic encephalopathy 1 complication 1 concussions 1 contact sport 1 female 1 health care personnel 1 health survey 1 human 1