Braverman, Eric R Preliminary investigation of plasma levels of sex hormones and human growth factor(s), and P300 latency as correlates to cognitive decline as a function of gender. [electronic resource] - BMC research notes Jul 2009 - 126 p. digital Publication Type: Journal Article ISSN: 1756-0500 Standard No.: 10.1186/1756-0500-2-126 doi