Inclusion Criteria:  For the adolescent :  Subject of the EDEN cohort included in the Helix cohort in 2014-2015 in Poitiers (16-19 years old) Subject benefiting from a Social Security scheme or benefiting through a third party  For the person legally responsible :  The legal guardian, if possible the mother, of the adolescent included in Athlete ; Subject benefiting from a Social Security scheme or benefiting through a third person; Free subject, without tutorship or guardianship or subordination.  Exclusion Criteria:  Concomitant participation in another clinical research study. Persons not benefiting from a Social Security scheme or not benefiting through a third party. Adolescents who are incapable or who do not give their consent to follow the study procedures