id	keyword
easat-8588	ref
easat-8588	smoking
easat-8588	vol
easat-8588	initiation
easat-8588	adolescents
easat-8588	tobacco
easat-8588	school
easat-8588	health
easat-8588	persistence
easat-8588	smoking initiation
easat-8588	wave
easat-8588	behavior
easat-8588	factors
easat-8588	study
easat-8588	determinants