Adult Humans human 575 adult 498 Male 450 Female 448 article 440 female 414 male 398 controlled study 314 priority journal 299 Middle Aged 294 Adolescent 149 Aged 143 clinical article 142 Young Adult 137 aged 135 major clinical study 129 middle aged 122 adolescent 115 Argentina 112 physiology 99 Child 86 human cell 82 Article 81 Animals 80 child 78 human experiment 71 nonhuman 69 human tissue 64