id	keyword
fbem-31531	environmental
fbem-31531	performance
fbem-31531	enterprises
fbem-31531	pharmaceutical
fbem-31531	efficiency
fbem-31531	model
fbem-31531	index
fbem-31531	dea
fbem-31531	regression
fbem-31531	factors
fbem-31531	quantile
fbem-31531	value
fbem-31531	evaluation
fbem-31531	scale