Limitations of direct immunoassays for measuring circulating estradiol levels in postmenopausal women and men in epidemiologic studies.
Stanczyk
Frank Z
FZ
Department of Obstetrics and Gynecology, Keck School of Medicine, University of Southern California, Los Angeles, California 90033, USA. fstanczyk@socal.rr.com
Jurow
Jordan
J
Hsing
Ann W
AW