1.
Gudmundsdottir SL, Flanders WD, Augestad LB. A longitudinal study of physical activity and menstrual cycle characteristics in healthy Norwegian women – The Nord-Trøndelag Health Study. Nor J Epidemiol [Internet]. 2011Aug.3 [cited 2024Nov.23];20(2). Available from: https://www.ntnu.no/ojs/index.php/norepid/article/view/1337