human 226 Humans 173 female 108 male 105 Article 104 adult 103 controlled study 83 Female 64 TA Engineering (General). Civil engineering (General) 62 Male 60 COVID-19 57 Adult 52 TP Chemical technology 50 article 47 Technology: general issues 46 major clinical study 43 middle aged 41 procedures 41 aged 40 History of engineering and technology 35 Research & information: general 34 nonhuman 33 Animals 32 Middle Aged 32 young adult 32 clinical article 31 adolescent 30 animal 30 randomized controlled trial 30 Adolescent 28