Fig. 1

PRISMA flowchart. Study flowchart of the articles included in the analysis according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses. CFS chronic fatigue syndrome, ME myalgic encephalitis
PRISMA flowchart. Study flowchart of the articles included in the analysis according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses. CFS chronic fatigue syndrome, ME myalgic encephalitis