Exercise-Induced hyponatremia in ultradistance triathletes is caused by inappropriate fluid retention - Speedy, D. B.; Rogers, I. R.; Noakes, T. D.; Wright, S.; Thompson, J. M.; Campbell, R.; Hellemans, I.; Kimber, N. E.; Boswell, D. R.; Kuttner, J. A.; Safih, S. (Clinical Journal of Sport Medicine, 2000)