Kirkpatrick Matthew G, Cruz Tess Boley, Goldenson Nicholas I, Allem Jon-Patrick, Chu Kar-Hai, Pentz Mary Ann, Unger Jennifer B
Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.
Center for Research on Media, Technology, and Health, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
Tob Control. 2017 Dec;26(e2):e145-e147. doi: 10.1136/tobaccocontrol-2016-053369. Epub 2017 Jan 2.