Self-examination by adolescents.
D000293:Adolescent; D001940:Breast; D001943:Breast Neoplasms / Q000517:prevention & control*; D005260:Female; D006801:Humans; D008297:Male; D010173:Palpation; D012648:Self Care; D013736:Testicular Neoplasms / Q000517:prevention & control*; D013737:Testis