id	keyword
ertr-831	tourism
ertr-831	covid-19
ertr-831	research
ertr-831	pandemic
ertr-831	health
ertr-831	travel
ertr-831	job
ertr-831	journal
ertr-831	tourism research
ertr-831	review
ertr-831	ertr
ertr-831	et al
ertr-831	stress
ertr-831	industry
ertr-831	issues