controlled study female human Humans 536 Female 529 article 516 male 477 priority journal 459 adult 455 Male 370 Adult 272 human cell 236 nonhuman 195 Article 191 clinical article 184 Middle Aged 177 major clinical study 170 Animals 165 metabolism 153 aged 151 protein expression 144 mouse 112 unclassified drug 112 animal cell 109 animal experiment 109 physiology 108 Aged 107 animal 105 Mice 98 Adolescent 91