id	keyword
hls-13044	aerosol
hls-13044	healthcare
hls-13044	hospital
hls-13044	contamination
hls-13044	disinfection
hls-13044	study
hls-13044	nebulizer
hls-13044	studies
hls-13044	masks
hls-13044	therapy
hls-13044	ozone
hls-13044	use
hls-13044	potential
hls-13044	et al
hls-13044	control