Liddle, L., Burleigh, M. C., Monaghan, C., Muggeridge, D. J., & Easton, C. (2020). Venous occlusion during blood collection decreases plasma nitrite but not nitrate concentration in humans. Nitric Oxide: Biology and Chemistry, 102, 21-27. https://doi.org/10.1016/j.niox.2020.06.001