机译:Conducting clinical trials during the COVID-19 pandemic
Univ Calif Los Angeles, David Geffen Sch Med, Los Angeles, CA 90095 USA;
Univ Calif Los Angeles, David Geffen Sch Med, Dept Med, Div Dermatol, Los Angeles, CA 90095 USA;
Univ Arizona, Dept Med, Div Dermatol, Tucson, AZ USA;