Seasonal effects of professional cycling on phagocytosis and hormones in elite cyclists - Schmidt, A.; Schulz, T.; Preuß, C.; Garcia, J.; Ortega, E.; Michna, H.; Lötzerich, H. (Book of abstracts of the 6th annual congress of the European College of Sport Science, 15th congress of the German Society of Sport Science. Cologne, 24-28 July 2001, 2001)