SPE-HPLC Determination of Free Cortisol Levels in Human Serum
SHI Hong-mei,XU Xiang-dong,SHI Jing,ZHAO Xin,ZHU He,KANG Wei-jun
Journal of Hebei University (Natural Science Edition) . 2009, (4): 398 -402 .  DOI: 10.3969/j.issn.1000-1565.2009.04.016