The Journal of Headache and Pain The Journal of Headache and Pain, Vol 20, Iss 1, Pp 1-9 (2019) Lemmens, J, de Pauw, J, van Soom, T, Michiels, S, Versijpt, J, van Breda, E, Castien, R & de Hertogh, W 2019, ' The effect of aerobic exercise on the number of migraine days, duration and pain intensity in migraine: A systematic literature review and meta-analysis ', Journal of Headache and Pain, vol. 20, no. 1, 16 . https://doi.org/10.1186/s10194-019-0961-8 Journal of headache and pain