1 Ben-Gurion University of the Negev, Beer-sheva 8410101, Israel. Electronic address: markclar@bgu.ac.il.
2 Department of International Medicine, Liverpool School of Tropical Medicine, Liverpool, UK.
3 University Hospital East Westphalia, Campus Klinikum Bielefeld, Bielefeld, Germany; Etiopia-Witten, Witten, Germany.
4 Faculty of Medicine, Department of Infectious Disease, Hebrew University of Jerusalem, Jersusalem, Israel; Hadassah Medical Center, Hadassah University Hospital - Ein Kerem, Jerusalem, Israel.
5 Faculty of Medicine, Braun School of Public Health and Department of Haematology, Hebrew University of Jerusalem, Jersusalem, Israel; Hadassah Medical Center, Hadassah University Hospital - Ein Kerem, Jerusalem, Israel.