Male adult human priority journal male 259 Humans 253 Female 242 female 237 article 215 controlled study 205 Adult 200 Middle Aged 164 aged 106 Aged 100 major clinical study 100 clinical article 86 Adolescent 60 Argentina 48 Article 47 Young Adult 47 middle aged 46 human cell 45 adolescent 38 human tissue 38 human experiment 35 physiology 34 protein expression 33 nonhuman 31 Aged, 80 and over 27 Animals 27