Aminu A. Bobboi, Ismaila A. Umar, Margaret H. Sawa, Hajjara A. Yusuf and Abubakar Gidado
Journal of Medical Sciences 3 ( 4 ): 298 - 306 , 2003
Aminu A. Bobboi, Jacqueline L. Yefon and Abubakar A. Gidado
Journal of Medical Sciences 4 ( 4 ): 331 - 339 , 2004