GRASP body mass index (bmi), decrease in fev1 (in asthmatic ever smokers), decrease in fev1 (in asthmatic never smokers), decrease in fev1 (in asthmatic participants >=30 years old), decrease in fev1 (in asthmatic participants), infant head circumference, lung function, forced expiratory volume in 1 second (fev1) percent predicted (in asthmatic participants)