by Connolly, D P, Ugwu, B T, Eke, B A
Published in East African medical journal (01.07.1998)

by EO, Umobong, BA, Ojo, ME, Aghahowa, O, Etim, J, Ngbea, VI, Ugwu, BA, Eke, T, Nyaga, BMJumbo GET, DUDUYEMI
Published in American journal of clinical medicine research (06.08.2014)