Immuno-endocrine and metabolic responses to long distance ski racing in world-class male and female cross-country skiers.
R?nsen O, B?rsheim E, Bahr R, Klarlund Pedersen B, Haug E, Kjeldsen-Kragh J, H?stmark AT. Immuno-endocrine and metabolic responses to long distance ski racing in world-class male and female cross-country skiers. Scand J Med Sci Sports. 2004 Feb; 14(1):39-48.