TY - JOUR AU - Casanueva Freijo, Felipe PY - 2013 SN - 0021-972X UR - http://hdl.handle.net/20.500.11940/3678 LA - eng TI - Comparisons of immunoassay and mass spectrometry measurements of serum estradiol levels and their influence on clinical association studies in men DO - 10.1210/jc.2012-3861 T2 - JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM M2 - E1097 VL - 98 ER -