American Journal of Preventive Medicine
American Journal of Preventive Medicine > 2014 > 47 > 4 > 452-460
American Journal of Preventive Medicine > 2014 > 47 > 4 > 375-381
American Journal of Preventive Medicine > 2014 > 47 > 4 > 403-410
American Journal of Preventive Medicine > 2014 > 47 > 4 > 417-423