Adult article human priority journal Humans 255 adult 226 Female 214 Male 204 controlled study 192 female 192 male 172 Middle Aged 153 clinical article 97 Aged 92 aged 81 major clinical study 78 Adolescent 75 human cell 59 Argentina 49 Young Adult 45 adolescent 44 Time Factors 38 human tissue 36 Child 35 normal human 35 Animals 33 Brain 33 human experiment 31 nonhuman 28 Human 27