Mahawithanage, S.T.C.; Kannangara, K.K.; Wickremasinghe, R.; Chandrika, U.G.; Jansz, E.R.; Karunaweera, N.D.; Wickremasinghe, A.R.
(HEC Press, Australia, 2007)
The objective of this study was to determine the impact of Vitamin A supplementation on health status and absenteeism of school children. A randomized double blind placebo controlled trial over a period of 13 months was ...