human 279 Humans 223 Article 178 controlled study 131 female 129 male 127 adult 105 Female 83 Male 81 drug screening 67 major clinical study 65 middle aged 64 procedures 63 nonhuman 62 mass screening 59 genetics 57 Middle Aged 52 genetic screening 49 Mass Screening 48 Animals 46 Screening 46 aged 46 unclassified drug 46 animal 45 Adult 44 screening 42 chemistry 41 metabolism 38 COVID-19 37 child 37