child human 123 male female 121 Humans 101 Child 97 Male 86 Female 82 adolescent 67 Adolescent 58 controlled study 56 preschool child 45 Article 38 adult 38 major clinical study 37 Child, Preschool 36 article 32 Adult 27 young adult 26 Young Adult 25 school child 25 clinical article 23 procedures 20 physiology 19 psychology 19 human experiment 18 infant 17 Infant 15 cross-sectional study 15 randomized controlled trial 14