Article Child, Preschool Humans 148 human 148 preschool child 148 child 142 female 137 male 133 Child 121 Male 120 Female 118 adolescent 79 controlled study 79 adult 78 Adolescent 77 infant 72 major clinical study 70 Infant 67 Adult 59 young adult 56 Young Adult 51 clinical article 43 middle aged 34 psychology 34 Middle Aged 33 priority journal 33 aged 28 Aged 26 newborn 26 procedures 26