evidencegaps
Primary study · included by 1 review

Selenium in diet, blood, and toenails in relation to human health in a seleniferous area.

Tyagi et al., 2021 · Longnecker M P, Taylor P R, Levander O A, et al. · The American journal of clinical nutrition · 1991

Included by

Do Adjunctive Therapies with Natural Products Improve Periodontal Clinical Parameters After Non-Surgical Treatment? A Systematic Review and Meta-Analysis.
Non-Cochrane · intervention · 2026 · cited as Tyagi et al., 2021 · Table 2

The review does not say which of its outcomes this study informs.

1 including review in total.