id	keyword
cord-104158-l7s2utqb	control
cord-104158-l7s2utqb	sir
cord-104158-l7s2utqb	system
cord-104158-l7s2utqb	model
cord-104158-l7s2utqb	rate
cord-104158-l7s2utqb	population
cord-104158-l7s2utqb	restriction
