1Department of Pathology, School of Medicine, College of Health Sciences,Tikur Anbessa Specialized Hospital, Addis Ababa University, Addis Ababa, Ethiopia; Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm 171 77, Sweden. Electronic address: tewodros.yalew.gebremariam@ki.se.
2Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm 171 77, Sweden. Electronic address: constance.boissin@ki.se.
3Department of Pathology, School of Medicine, College of Health Sciences,Tikur Anbessa Specialized Hospital, Addis Ababa University, Addis Ababa, Ethiopia. Electronic address: amanuel.demie@aau.edu.et.
4Department of Oncology-Pathology, Karolinska Institutet, Stockholm 171 77, Sweden. Electronic address: wenwen.sun@ki.se.
5Department of Pathology, School of Medicine, College of Health Sciences,Tikur Anbessa Specialized Hospital, Addis Ababa University, Addis Ababa, Ethiopia. Electronic address: moti.sori@aaa.edu.et.
6Department of Molecular Medicine and Surgery, Karolinska Institutet, K1 Molekylär medicin och kirurgi, K1 MMK Kärlkirurgi, Stockholm 171 76, Sweden; Department of Oncology, Södersjukhuset, Stockholm, Sweden. Electronic address: Tove.ekdahl.hjelm@ki.se.
7Department of Oncology, School of Medicine, College of Health Sciences, Tikur Anbessa Specialized Hospital, Addis Ababa University, Addis Ababa, Ethiopia. Electronic address: mathewos.assefa@aau.edu.et.
8Department of Surgery, School of Medicine, College of Health Sciences, Tikur Anbessa Specialized Hospital, Addis Ababa University, Addis Ababa, Ethiopia. Electronic address: endale.anberber@aau.edu.et.
9Institute of Pathology, Medical Faculty, Martin Luther University Halle-Wittenberg, Magdeburger Straße 14, Halle (Saale) 06112, Germany. Electronic address: marcus.bauer@uk-halle.de.
10Department of Oncology, School of Medicine, College of Health Sciences, Tikur Anbessa Specialized Hospital, Addis Ababa University, Addis Ababa, Ethiopia. Electronic address: bethlehem.getachewa@aau.edu.et.
11Department of Oncology-Pathology, Karolinska Institutet, Stockholm 171 77, Sweden. Electronic address: johan.hartman@ki.se.
12Department of Molecular Medicine and Surgery, Karolinska Institutet, K1 Molekylär medicin och kirurgi, K1 MMK Kärlkirurgi, Stockholm 171 76, Sweden; Department of Reconstructive Plastic Surgery, Karolinska University Hospital, Stockholm, Sweden. Electronic address: jenny.lofgren@ki.se.
13Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm 171 77, Sweden. Electronic address: mattias.rantalainen@ki.se.
14Department of Pathology, School of Medicine, College of Health Sciences,Tikur Anbessa Specialized Hospital, Addis Ababa University, Addis Ababa, Ethiopia; Affiliate Karolinska Institute, Stockholm, Sweden. Electronic address: senait.ashenafi@aau.edu.et.