Adult male human 435 Male 433 adult 413 Humans 398 female 381 Female 376 article 333 controlled study 243 Middle Aged 216 priority journal 206 Adolescent 128 aged 121 major clinical study 120 Aged 119 middle aged 112 Young Adult 111 adolescent 102 clinical article 97 physiology 97 Argentina 79 Child 72 Article 67 child 67 human experiment 63 young adult 54 normal human 51 human cell 49 Child, Preschool 46