Humans Male adult human 505 male 486 Female 432 female 426 Adult 389 article 363 controlled study 311 Middle Aged 282 priority journal 255 aged 151 Aged 143 major clinical study 136 middle aged 136 Adolescent 126 Young Adult 121 clinical article 113 Argentina 105 Article 105 physiology 105 adolescent 103 Animals 72 child 70 human experiment 69 Child 65 nonhuman 65 young adult 60 human cell 53