Beishon, L, Woodhouse, L J, Bereczki, D, Christensen, H K, Collins, R, Gommans, J, Kruuse, C, Ntaios, G, Ozturk, S, Phillips, S, Pocock, S, Szatmari, S, Wardlaw, J, Sprigg, N & Bath, P M 2020, ' Relationship between nitrate headache and outcome in patients with acute stroke: results from the efficacy of nitric oxide in stroke (ENOS) trial ', Stroke and Vascular Neurology, pp. svn-2020-000498 . https://doi.org/10.1136/svn-2020-000498 Stroke and Vascular Neurology Beishon, L, Woodhouse, L J, Bereczki, D, Christensen, H K, Collins, R, Gommans, J, Kruuse, C, Ntaios, G, Ozturk, S, Phillips, S, Pocock, S, Szatmari, S, Wardlaw, J, Sprigg, N & Bath, P M 2021, ' Relationship between nitrate headache and outcome in patients with acute stroke : Results from the efficacy of nitric oxide in stroke (ENOS) trial ', Stroke and Vascular Neurology, vol. 6, no. 2, pp. 180-186 . https://doi.org/10.1136/svn-2020-000498 Stroke and Vascular Neurology, Vol 6, Iss 2 (2021)