The clinical impact of ultrasound contrast agents in EUS: a systematic review according to the levels of evidence
Keywords: سطح شواهد; CE-EUS; contrast-enhanced-EUS; CH-EUS; contrast-harmonic EUS; CP; chronic pancreatitis; GIST; gastrointestinal stromal tumor; IOA; interobserver agreement; IPMN; intraductal papillary mucinous neoplasm; LE; level of evidence; NET; neuroendocrine tumor; NP