Fig. 1From: Salivary exosomal microRNAs as biomarkers for head and neck cancer detection—a literature reviewPRISMA 2009 flow diagram for head and neck cancer detection based on salivary exosomal microRNAs (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. https://doi.org/10.1371/journal.pmed.100009)Back to article page