I co-authored an article in Environmental Research entitled “Urinary nitrate and sodium in a high-risk area for upper gastrointestinal cancers: Golestan Cohort Study” led by Dr. Arash Etemadi. We found urinary nitrate was associated with living at a higher elevation and using groundwater for drinking and a positive correlation between median urinary nitrate and sodium and esophageal cancer incidence rates in a rural population in northeastern Iran.