bulletin of the world health organization1993Vol. 71pp. -
362
d1993bulletinthe
Abstract
During one year of follow-up, 306 deaths of children under the age of 5 years were included in a concurrent case-referent study that was based on a population estimated at 28,780 in 1987. A total of 612 live referents, matched for age, sex and study area, were also selected from the study population …