Humans female human 142 middle aged Female 140 Middle Aged 140 Male 132 male 132 adult 126 Adult 110 article 76 controlled study 72 aged 66 Aged 60 Article 56 priority journal 46 Argentina 40 major clinical study 39 adolescent 35 genetics 34 Adolescent 33 metabolism 30 physiology 30 Young Adult 28 clinical article 28 young adult 28 child 26 Child 23 pathology 23 clinical trial 19