Fig. 4From: Endoscopic imaging modalities for diagnosing invasion depth of superficial esophageal squamous cell carcinoma: a systematic review and meta-analysisQuality of the included studies evaluated according to the Quality Assessment of Diagnostic Accuracy Studies-2 (QUADAS-2) criteria. EP: epithelium, LPM: lamina propria, MM: muscularis mucosa, SM: submucosaBack to article page