human 192 Humans 169 male 114 female 113 Male 90 Article 89 Female 89 adult 88 Adult 65 controlled study 48 major clinical study 48 middle aged 47 child 46 Middle Aged 44 Child 40 adolescent 39 genetics 37 Young Adult 36 young adult 36 etiology 35 Adolescent 34 psychology 31 Medicine and Nursing 30 aged 29 questionnaire 28 Aged 23 clinical article 23 retrospective study 23 pathology 22 preschool child 21