Ahokoski O, Virtanen A, Kairisto V, Scheinin H, Huupponen R, Irjala K, 1999, Clin Chem, 45(7), 1097-9 , Biological day-to-day variation and reference change limits of serum cortisol and aldosterone in healthy young men on unrestricted diets.
Authors: Ahokoski O, Virtanen A, Kairisto V, Scheinin H, Huupponen R, Irjala K