human 21 Humans 14 female 11 Article 10 Gender studies, gender groups 10 male 10 Literary studies: poetry & poets 8 Literature: history & criticism 8 TK Electrical engineering. Electronics Nuclear engineering 8 adult 7 controlled study 7 Cultural studies 6 Literature: history and criticism 6 Philosophy 6 Society & culture: general 6 Female 5 Social & political philosophy 5 article 5 major clinical study 5 Child 4 Gender 4 Literature & literary studies 4 Male 4 Poetry 4 Religion & beliefs 4 TA Engineering (General). Civil engineering (General) 4 United States 4 aged 4 middle aged 4 procedures 4