Fig. 1From: Mental health diagnoses in adults with phenylketonuria: a retrospective systematic audit in a large UK single centreAdapted from PRISMA Flow chart for literature search—from: Moher D, Liberati A, Tetzlaff J, Altman DG, The PRISMA Group (2009). Preferred reporting items for systematic reviews and meta-analyses: The PRISMA statement. PLoS Med 6(7): e1000097. 10.1371/journal.pmed1000097Back to article page