Correction: Income disparities in smoking cessation and the diffusion of smoke-free homes among U.S. smokers: Results from two longitudinal surveys

• Maya Vijayaraghavan, 
• Tarik Benmarhnia, 
• John P. Pierce, 
• Martha M. White, 
• Jennie Kempster, 
• Yuyan Shi, 
• Dennis R. Trinidad, 
• Karen Messer