Male adult human male 539 Humans 505 Female 475 female 463 Adult 428 article 404 controlled study 325 Middle Aged 282 priority journal 275 aged 169 Aged 163 major clinical study 154 Adolescent 143 middle aged 136 clinical article 125 Young Adult 121 physiology 117 adolescent 116 Argentina 107 Article 107 Animals 80 child 79 Child 78 human experiment 71 nonhuman 71 human cell 61 young adult 60