Number of children needing glasses, owning glasses at baseline, purchasing glasses prior to endline (main study outcome) and observed wearing glasses at endline (secondary outcome), by randomization group.
收藏数据链接：
官方服务：
资源简介：
Number of children needing glasses, owning glasses at baseline, purchasing glasses prior to endline (main study outcome) and observed wearing glasses at endline (secondary outcome), by randomization group.
创建时间：
2017-11-22
