id	keyword
hassl-3373	firm
hassl-3373	covid-19
hassl-3373	value
hassl-3373	exposure
hassl-3373	china
hassl-3373	research
hassl-3373	pandemic
hassl-3373	results
hassl-3373	relationship
hassl-3373	variable
hassl-3373	table
hassl-3373	study