authors
- Gebrecherkos, Teklay
- Kiros, Yazezew Kebede
- Challa, Feyissa
- Gebreegzabher, Atsbeha
- Abdella, Saro
- Leta, Dereje
- Desta, Abraham
- Hailu, Ataklti
- Tasew, Geremew
- Abdulkader, Mahmud
- Tessema, Masresha
- Tollera, Getachew
- Arefaine, Zekarias Gessesse
- Schallig, Henk HDF
- Urban, Britta C
- Rinke de Wit, Tobias F
- Wolday, Dawit