USFDA 2003: United States Food and Drug Administration: Phosphatidylserine and Cognitive Dysfunction and Dementia (Qualified Health Claim: Final Decision Letter) [online]. Silver Spring (MD): United States Department of Health and Human Services, United States Food and Drug Administration.[Accessed 2009 May 12]. Available from: http://www.fda.gov/Food/LabelingNutrition/LabelClaims/QualifiedHealthClaims/ucm072999.htm