Authors: Takeichiro Tominaga, Daisuke Furushima, Keiko Unno, Ibuki Sugiyama, Makoto Ozeki, Yoriyuki Nakamura, Hiroshi Yamada.
Authors: Sunday P. Ukwo, Ifiok I. Udo, Nyaudoh Ndaeyo.
Authors: Opoku Rosemond S, Larbie Christopher, Lutterodt Herman E, Genfi Ampem K.A, Dumfeh Emmanuel, Perez Danso.