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Asthma incidence and risk factors in a national longitudinal sample of adolescent Canadians: a prospective cohort… http://t.co/qXy7yNhYOi
Asthma incidence and risk factors in a national longitudinal sample of adolescent Canadians: a prospective cohort… http://t.co/qXy7yNhYOi
Asthma incidence and risk factors in a national longitudinal sample of adolescent Canadians: a prospective cohort… http://t.co/T9njW3LNDq
Asthma incidence and risk factors in a national longitudinal sample of adolescent Canadians: a prospective cohort... http://t.co/vYqc7HSCpu
#Canadian_scientists suggest #asthma #prevention programmes 4 #adolecents should focus on #girls and #passive_smokers http://t.co/jISA3m9jdd