Trends and factors of botanical dietary supplement use among US adults with COPD from 1999 to 2016

• Yanjie Sun,

  Roles Data curation, Formal analysis, Writing – original draft

  Affiliation Department of General Practice, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China

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• Rongying Wang,

  Roles Writing – review & editing

  Affiliation Department of General Practice, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China

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• Weiwei Tang,

  Roles Writing – review & editing

  Affiliations School of Health Policy and Management, Nanjing Medical University, Nanjing, Jiangsu, China, Center for Global Health, Nanjing Medical University, Nanjing, Jiangsu, China, Institute of Healthy Jiangsu Development, Nanjing Medical University, Nanjing, Jiangsu, China

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• Chao Li,

  Roles Formal analysis, Writing – review & editing

  Affiliation Auburn University Harrison School of Pharmacy, Auburn, Alabama, United States of America

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• Nan Huo

  Roles Investigation, Methodology, Project administration, Writing – review & editing

  * E-mail: huo.nan@mayo.edu

  Affiliation Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota, United States of America

  http://orcid.org/0000-0002-4980-2421

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