human 368 Humans 289 female 197 male 187 adult 163 article 156 Female 131 Article 121 Male 119 controlled study 109 Adult 85 major clinical study 65 human experiment 61 aged 57 middle aged 57 procedures 53 Middle Aged 52 adolescent 49 young adult 49 physiology 47 nonhuman 46 child 44 Aged 42 psychology 42 Adolescent 41 Young Adult 40 machine learning 38 Animals 36 Child 36 questionnaire 35