250
Participants
Start Date
May 31, 2007
Primary Completion Date
August 31, 2008
Study Completion Date
August 31, 2008
vitamin A supplements
gelatinous and reddish opaque capsules containing 200 000 IU vitamin A
Placebo
125 children received placebo capsules
National school of Pos Betau, Kuala Lipis
University of Malaya
OTHER
Ministry of Health, Malaysia
OTHER_GOV
Sana'a University
OTHER