Authors: Arthur E. Brawer.
Authors: Camara M, Dore M, Toure ML, Diallo MT, Toure L, Youla S, Konate IS, Barry LF, Camara MS, Conde MS, Conde ML, Djibo Hamani AB, Cisse FA.
Authors: Mitsuru Sakitani.
Authors: Richard Peter Akpan, Victoria Oluwabunmi Akpan, Kevin Aghatise.