ymanga28@gmail.com
Ethiopia
yuanyuan.yi@efd.gu.se
Vasagatan 1
Global Hub
GYiran@ug.edu.gh
University of Ghana
Ghana
derrajohn125@yahoo.com
Ethiopia
zhangb@nju.edu.cn
86-25-89680536
163 Xianlin Avenue
xin.zhang614@bnu.edu.cn
19 XinJieKouWai Street
China