id	keyword
brj-22047	wood dust
brj-22047	exposure
brj-22047	et al
brj-22047	mass
brj-22047	concentration
brj-22047	dust exposure
brj-22047	risk
brj-22047	respirable
brj-22047	doi
brj-22047	mass concentration
brj-22047	dust mass
brj-22047	cancer
brj-22047	cnc
brj-22047	oak