JMIR J Med Internet Res Journal of Medical Internet Research 1438-8871 Gunther Eysenbach JMIR Publications Inc., Toronto, Canada v14i1e12 22236454 10.2196/jmir.2049 Corrigenda and Addenda Metadata Correction: Online Social Networks and Smoking Cessation: A Scientific Research Agenda Eysenbach Gunther Cobb Nathan K MD 1

The Schroeder Institute for Tobacco Research and Policy Studies American Legacy Foundation 1724 Massachusetts Ave NW Washington, DC, 20036 United States 1 202 454 5745 1 202 454 5785 ncobb@legacyforhealth.org

2 3 4 Graham Amanda L PhD 1 3 Byron M. Justin MHS 4 Niaura Raymond S PhD 1 3 4 Abrams David B PhD 1 3 4 Workshop Participants 5 ¹ The Schroeder Institute for Tobacco Research and Policy Studies American Legacy Foundation Washington, DC United States ² Division of Pulmonary & Critical Care Department of Medicine Georgetown University Medical Center Washington, DC United States ³ Department of Oncology Georgetown University Medical Center / Lombardi Comprehensive Cancer Center Washington, DC United States ⁴ Department of Health, Behavior and Society Johns Hopkins Bloomberg School of Public Health Baltimore, MD United States ⁵ see acknowledgements of original article Jan-Feb 2012 11 01 2012 14 1 e12 11 01 2012 11 01 2012 ©Nathan K. Cobb, Amanda L. Graham, M. Justin Byron, Raymond S. Niaura, David B. Abrams, Workshop Participants. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 11.01.2012. 2012