(Q50611385)
Statements
The effectiveness of annual versus biennial mass chemotherapy in reducing morbidity due to schistosomiasis: a prospective study in Gezira-Managil, Sudan (English)
M M Homeida
I A Eltoum
M M Ali
S M Suliaman
E A Elobied
M Mansour
A M Saad
1 February 1996