Male article human priority journal Humans 332 male 304 Female 272 controlled study 261 female 239 adult 215 Adult 204 Middle Aged 152 Aged 114 human cell 106 aged 104 clinical article 100 major clinical study 96 Adolescent 74 nonhuman 64 Animals 63 Argentina 52 Child 48 protein expression 45 adolescent 44 human tissue 42 unclassified drug 40 Young Adult 39 normal human 39 Spermatozoa 38 Time Factors 37