“…Although recall bias could not be completely eliminated, clinical response rate of POP has been very encouraging with significantly improved symptoms and quality of life ranging from 73%-100% at up to 18-mo follow-up period[37,43,45,47,56]. All studies but one showed significant drop in total GCSI after POP[43,48,61,67]. The symptoms that improve the most were nausea and vomiting, while bloating and abdominal distension were not consistently improved among existing studies[37,43,45,47,48,56,58].…”