1.
Ethiop. j. health dev. (Online)
; 20(3): 160-169, 2006.
Article
in English
| AIM
| ID: biblio-1261676
2.
Ethiop. med. j. (Online)
; 44(4): 358-389, 2006.
Article
in English
| AIM
| ID: biblio-1261951