human 13,420 Humans 10,264 female 7,057 male 6,942 adult 5,820 Article 5,456 controlled study 4,610 Female 4,502 Male 4,287 article 4,088 LB2300 Higher Education 3,452 Adult 2,915 major clinical study 2,357 middle aged 2,227 procedures 1,929 Middle Aged 1,888 nonhuman 1,883 L Education (General) 1,867 aged 1,830 young adult 1,760 COVID-19 1,738 adolescent 1,722 human experiment 1,675 Malaysia 1,657 child 1,647 genetics 1,619 Young Adult 1,577 physiology 1,528 Adolescent 1,509 TK Electrical engineering. Electronics Nuclear engineering 1,476