1. American Association for Public Opinion Research. (2009). Response Rate 4: Standard definitions. Final dispositions of case codes and outcome rates for surveys (6th ed.). Lenexa, KS.
2. Guidelines for adolescent preventive services (GAPS: Recommendations monograph);American Medical Association,1997
3. Cardiovascular screening of athletes;Beckerman;Clinical Journal of Sport Medicine,2004
4. Preparticipation physical evaluation;Bernhardt,2010
5. The preparticipation evaluation: An opportunity for change and consensus;Best;Clinical Journal of Sport Medicine,2004