Assertion: zinc's effect | /r/AtLocation | vitamin a treatment
Facets:
value: in the incidence of clinical malaria
type: OTHER
Source sentences:
text: A double-blind, randomized, placebo-controlled community-based trial involving 200 infants (age, 6 to 24 months) from 4 countries in Central and West Africa, evaluated the effect of zinc added to vitamin A treatment in the incidence of clinical malaria.