Next generation media monitoring: Global coverage of electronic nicotine delivery systems (electronic cigarettes) on Bing, Google and Twitter, 2013-2018

• John W. Ayers ,

  Roles Conceptualization, Formal analysis, Funding acquisition, Investigation, Methodology, Resources, Software, Supervision, Validation, Writing – original draft, Writing – review & editing

  * E-mail: ayers.john.w@gmail.com

  Affiliation University of California San Diego School of Medicine, La Jolla, California, United States of America

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• Mark Dredze,

  Roles Data curation, Formal analysis, Methodology, Software, Visualization, Writing – original draft, Writing – review & editing

  Affiliation Department of Computer Science, Johns Hopkins University, Baltimore, Maryland, United States of America

  http://orcid.org/0000-0002-0422-2474

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• Eric C. Leas,

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Software, Validation, Visualization, Writing – original draft, Writing – review & editing

  Affiliation Stanford Prevention Research Center, Stanford University School of Medicine, Palo Alto, California, United States of America

  http://orcid.org/0000-0001-9221-0336

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• Theodore L. Caputi,

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Software, Visualization, Writing – original draft, Writing – review & editing

  Affiliation University of California San Diego School of Medicine, La Jolla, California, United States of America

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• Jon-Patrick Allem,

  Roles Conceptualization, Investigation, Methodology, Software, Visualization, Writing – review & editing

  Affiliation Keck School of Medicine, University of Southern California, Los Angeles, California, United States of America

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• Joanna E. Cohen

  Roles Conceptualization, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Supervision, Writing – original draft, Writing – review & editing

  Affiliation Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, United States of America

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