Nyberg S., Gerring E., Gjellan S., Vergara M., Lindström T., and Nystrom F. H. “Effects of Exercise With or Without Blueberries in the Diet on Cardio-Metabolic Risk Factors: An Exploratory Pilot Study in Healthy Subjects”. Upsala Journal of Medical Sciences, vol. 118, no. 4, Aug. 2013, doi:10.3109/03009734.2013.825348.