id	keyword
bjos-8667216	students
bjos-8667216	covid-19
bjos-8667216	care
bjos-8667216	doi
bjos-8667216	pandemic
bjos-8667216	training
bjos-8667216	oral
bjos-8667216	study
bjos-8667216	activities
bjos-8667216	sci
bjos-8667216	patients
bjos-8667216	health
bjos-8667216	self