Global smoking trends in inflammatory bowel disease: A systematic review of inception cohorts

• Tom Thomas ,

  Contributed equally to this work with: Tom Thomas, Joht Singh Chandan

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

  * E-mail: tom.thomas@nhs.net

  Affiliations Translational Gastroenterology Unit, University of Oxford, Oxford, United Kingdom, Institute of Applied Health Research, University of Birmingham, Birmingham, United Kingdom

  http://orcid.org/0000-0002-2188-3784

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• Joht Singh Chandan ,

  Contributed equally to this work with: Tom Thomas, Joht Singh Chandan

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Resources, Software, Validation, Visualization, Writing – review & editing

  Affiliation Institute of Applied Health Research, University of Birmingham, Birmingham, United Kingdom

  http://orcid.org/0000-0002-9561-5141

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• Venice Sze Wai Li,

  Roles Formal analysis, Methodology, Visualization, Writing – review & editing

  Affiliation Department of Medicine and Therapeutics, Institute of Digestive Disease, State Key Laboratory of Digestive Diseases, LKS Institute of Health Science, Chinese University of Hong Kong, Hong Kong, China

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• Cheuk Yin Lai,

  Roles Methodology, Visualization, Writing – review & editing

  Affiliation Department of Medicine and Therapeutics, Institute of Digestive Disease, State Key Laboratory of Digestive Diseases, LKS Institute of Health Science, Chinese University of Hong Kong, Hong Kong, China

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• Whitney Tang,

  Roles Data curation, Writing – review & editing

  Affiliation Department of Medicine and Therapeutics, Institute of Digestive Disease, State Key Laboratory of Digestive Diseases, LKS Institute of Health Science, Chinese University of Hong Kong, Hong Kong, China

  http://orcid.org/0000-0002-2355-4933

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• Neeraj Bhala,

  Roles Methodology, Supervision, Writing – review & editing

  Affiliations Institute of Applied Health Research, University of Birmingham, Birmingham, United Kingdom, University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom

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• Gilaad G. Kaplan ,

  Roles Conceptualization, Data curation, Supervision, Validation, Writing – review & editing

  ¶‡ These authors also contributed equally to this work.

  Affiliation Departments of Medicine and Community Health Sciences, University of Calgary, Calgary, Alberta, Canada

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• Siew C. Ng ,

  Roles Conceptualization, Methodology, Supervision, Validation, Writing – review & editing

  ¶‡ These authors also contributed equally to this work.

  Affiliation Department of Medicine and Therapeutics, Institute of Digestive Disease, State Key Laboratory of Digestive Diseases, LKS Institute of Health Science, Chinese University of Hong Kong, Hong Kong, China

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• Subrata Ghosh

  Roles Conceptualization, Formal analysis, Resources, Supervision, Validation, Writing – review & editing

  ¶‡ These authors also contributed equally to this work.

  Affiliations University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom, NIHR Biomedical Research Centre Birmingham, Institute of Translational Medicine, University of Birmingham, Birmingham, United Kingdom

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