human 299 Humans 236 female 192 male 181 adult 142 Article 118 Female 117 COVID-19 112 Male 109 controlled study 108 Adult 81 major clinical study 71 aged 67 article 66 child 65 pandemic 52 adolescent 51 coronavirus disease 2019 49 middle aged 49 Adolescent 47 psychology 45 Aged 44 Child 43 Middle Aged 41 SARS-CoV-2 41 procedures 41 questionnaire 39 United States 38 clinical article 38 randomized controlled trial 37