human 299 Article 192 Humans 191 adult 157 drug safety 157 female 151 male 148 controlled study 116 major clinical study 86 safety 80 drug efficacy 72 patient safety 71 aged 61 Safety 59 article 58 Female 57 COVID-19 55 middle aged 53 Adult 50 Male 50 coronavirus disease 2019 46 clinical article 45 randomized controlled trial 44 food safety 39 Safety engineering 38 treatment outcome 38 Middle Aged 37 questionnaire 37 Accident prevention 36 Malaysia 36