AU - Stone AA, Krueger AB, Steptoe A, Harter JK TI - THe socioeconomic gradient in daily colds and influenza, headaches, and pain PT - JOUR DP - 2010 TA - Archives of Internal Medicine pages = {570-572}, VI - 170 IP - 6 AID - 10.1001/archinternmed.2010.20 [doi] 4100 - http://dx.doi.org/10.1001/archinternmed.2010.20 SO - Archives of Internal Medicine March 22, 2010 170(6):570