RETRACTED: Cardiovascular and mortality outcomes of DPP-4 inhibitors vs. sulfonylureas as metformin add-on therapy in patients with type 2 diabetes: A systematic review and meta-analysis

• Refli Hasan,

  Roles Conceptualization, Data curation, Investigation, Methodology, Writing – original draft, Writing – review & editing

  Affiliation Department of Internal Medicine, Faculty of Medicine, Universitas Sumatera Utara, Medan, Indonesia

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• Uliana Y. Chugaeva,

  Roles Conceptualization, Investigation, Methodology, Writing – original draft, Writing – review & editing

  Affiliation Department of Pediatric, Preventive Dentistry and Orthodontics, Institute of Dentistry, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia

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• Mahdi Mohammadian,

  Roles Conceptualization, Data curation, Investigation, Visualization, Writing – original draft, Writing – review & editing

  Affiliation Department of Epidemiology and Biostatistics, School of Public Health, Isfahan University of Medical Sciences, Isfahan, Iran

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• Somayeh Zamanifard,

  Roles Conceptualization, Data curation, Methodology, Project administration, Writing – original draft, Writing – review & editing

  Affiliation Department of Cardiology, School of Medicine, Shahrekord University of Medical Sciences, Shahrekord, Iran

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• Abdollah Mohammadian-Hafshejani

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

  * E-mail: amohamadii1361@gmail.com

  Affiliation Epidemiology, Modeling in Health Research Center, Shahrekord University of Medical Sciences, Shahrekord, Iran

  https://orcid.org/0000-0003-1062-0097

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