id	keyword
hls-11178	test
hls-11178	knowledge
hls-11178	education
hls-11178	health
hls-11178	covid-19
hls-11178	group
hls-11178	control
hls-11178	pre
hls-11178	behavior
hls-11178	respondents
hls-11178	post
hls-11178	intervention
hls-11178	study