Association of metformin use with risk and survival outcome of esophageal cancer in patients with diabetes: A systematic review and meta-analysis

• Hui Xie ,

  Contributed equally to this work with: Hui Xie, Muhan Li

  Roles Conceptualization, Data curation, Investigation, Software, Visualization, Writing – original draft

  Affiliations The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China, The First Clinical Medical College of Henan University of Chinese Medicine, Zhengzhou, China

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• Muhan Li ,

  Contributed equally to this work with: Hui Xie, Muhan Li

  Roles Formal analysis, Methodology, Project administration, Software, Supervision

  Affiliation The First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, China

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• Zhaoqi Chen ,

  Roles Conceptualization, Supervision, Writing – review & editing

  * E-mail: 370411478@qq.com

  Affiliation Henan Provincial People’s Hospital, Zhengzhou, China

  https://orcid.org/0000-0002-7783-413X

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• Yuling Zheng

  Roles Funding acquisition, Software, Visualization, Writing – review & editing

  * E-mail: 370411478@qq.com

  Affiliations The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China, The First Clinical Medical College of Henan University of Chinese Medicine, Zhengzhou, China

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