Study Status: Completed
Recruit Status: Unknown status
Study Type: Interventional
Official Title: Efficacy and Safety of Folic Acid Supplementation Lowering Arsenic in a Chronic, Low-level Exposed Arsenic Population: a Randomized, Double-blind, Placebo Controlled Clinical Trial.
Brief Summary: The purpose of this study is to determine whether folic acid supplementation are effective on arsenic lowering in a chronic, low-level arsenic exposed population.