Correction: Musculoskeletal Pain as a Marker of Health Quality. Findings from the Epidemiological Sleep Study among the Adult Population of São Paulo City

• Suely Roizenblatt, 
• Altay L. Souza, 
• Luciana Palombini, 
• Luciana M. Godoy, 
• Sergio Tufik, 
• Lia Rita A. Bittencourt