Neuroendocrine neoplasms of gastrointestinal tract and secondary primary synchronous tumors: A systematic review of case reports. Casualty or causality?

• Rafael Parra-Medina ,

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Visualization, Writing – original draft

  * E-mail: rafa.parram@gmail.com

  Affiliations Research Institute, Fundación Universitaria de Ciencias de la salud, Bogotá, Colombia, Department of Pathology, Fundación Universitaria de Ciencias de la salud, Bogotá, Colombia

  http://orcid.org/0000-0002-8428-5837

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• Paula Moreno-Lucero,

  Roles Formal analysis, Investigation, Writing – original draft

  Affiliation Department of Pathology, Fundación Universitaria de Ciencias de la salud, Bogotá, Colombia

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• Julian Jimenez-Moreno,

  Roles Investigation, Methodology, Writing – original draft

  Affiliation Department of Pathology, Fundación Universitaria de Ciencias de la salud, Bogotá, Colombia

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• Alejandra María Parra-Morales,

  Roles Investigation, Methodology, Writing – original draft

  Affiliation Research Institute, Fundación Universitaria de Ciencias de la salud, Bogotá, Colombia

  http://orcid.org/0000-0002-2077-2556

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• Alfredo Romero-Rojas

  Roles Data curation, Formal analysis, Writing – original draft

  Affiliation Department of Pathology, National Institute of Cancer, Bogotá, Colombia

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