Relationship of serum estradiol and progesterone concentrations to the excretion profiles of their major urinary metabolites as measured by enzyme immunoassay and radioimmunoassay. - Munro,C.J.; Stabenfeldt,G.H.; Cragun,J.R.; Addiego,L.A.; Overstreet,J.W.; Lasley,B.L. (Clin Chem, 1991)