1Department of Medical Biotechnology, University of Siena, Siena, Italy
2Institute of Pathology, University Hospital of Tübingen, Tübingen, Germany
3Department of Pathology, University College London, London, UK
4Department of Cellular Pathology, Barts Health NHS Trust, London, UK
5Department of Clinical Medicine and Therapeutics, University of Nairobi, Nairobi, Kenya
6Department of Human Pathology, University of Nairobi, Nairobi, Kenya
7South Egypt Cancer Institute, Assiut University, Assiut, Egypt
8 Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK
9Department of Biosciences, Durham University, Durham, UK
10Clinical Department, National Institute for Infectious Diseases “Lazzaro Spallanzani” I.R.C.C.S, Rome, Italy
11Department of Experimental Diagnostic, and Specialty Medicine Bologna University Medical School, Bologna; Euro-Mediterranean Institute of Science and Technology (IEMEST), Palermo, Italy
12Department of Pathology, JKUAT, Nairobi, Kenya
13Department of Cellular Pathology, University College Hospital, London, UK
© The Author(s) 2020
Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.