adult article human 708 male 535 female 534 Humans 487 Adult 424 Male 424 controlled study 415 Female 409 priority journal 399 Middle Aged 260 aged 219 clinical article 215 Aged 171 major clinical study 160 Adolescent 133 adolescent 132 Argentina 117 nonhuman 108 Animals 99 human cell 94 human experiment 88 physiology 88 middle aged 84 child 83 normal human 83 Young Adult 81 case report 73 Child 72