Effects of exercise on haematologic parameters, serum iron, serum ferritin, red cell 2,3-diphosphoglycerate and creatine contents, and serum erythropoietin in long-distance runners during basal training.
Ricci G, Masotti M, De Paoli Vitali E, Vedovato M, Zanotti G. Acta Haematol. 1988; 80(2):95-8.