Public administration 192 human 178 Politics & government 171 Humans 154 Article 115 male 115 female 108 controlled study 89 adult 88 Male 86 Female 79 middle aged 53 Middle Aged 50 Constitutional & administrative law 49 Sociology & anthropology 49 United States 49 Adult 46 major clinical study 46 nonhuman 42 aged 40 priority journal 37 article 35 animal experiment 31 Aged 29 Animals 29 COVID-19 28 treatment outcome 28 administration and dosage 27 Administration, Oral 26 Food and Drug Administration 26