1 Subjects: “...adolescents...”

2 Subjects: “...adolescents...”

3 Subjects: “...adolescence...”

4 Subjects: “...adolescent...”

5 Subjects: “...adolescence...”

6 Subjects: “...adolescence...”

7 Subjects: “...adolescents...”

8 Subjects: “...adolescents and young adults...”

9 Subjects: “...healthy adolescents...”

10 “..., their adolescents spend longer and longer in education and training, and the elderly members of the family live...”