Radiation(7) inactivation(7) SARS‐CoV‐2(5) ultraviolet(5) viruses(5) effective(4) treated(4) exposure to(3) extreme(3) promote(3) Inc.(3) skin(3) dose(3) highest dose(3) contribute(3) promoted(3) Japan(3) Critical(3) while(3) occurred(3) Type(3) Laboratory(3) information(3) Tokyo(3) limit(3) faster(3) filtered(3) Efficacy and safety(3) Evidence(3) wavelength(3)