Fig. 3From: Neuroimaging characteristics of myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS): a systematic reviewadapted from QUADAS-2, a quality assessment of diagnostic accuracy studies, for observational studies and listed in Additional file 1. The complete list of questions in each domain was detailed in the method sectionSummary of the risk of bias for studies reviewed. The risk of bias for each study was evaluated using a toolBack to article page