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SPIRIT figure showing the schedule of enrollment, interventions, and assessments. DQ = Damum questionnaire, ECG = electrocardiography, EGG = electrogastrography, FD-QoL = functional dyspepsia-related quality of life, FRQ = food retention questionnaire, OTE = overall total effect, PIFD = pattern identification of functional dyspepsia, SDS = single dyspepsia symptom, TDS = total dyspepsia symptom, VAS = visual analogue scale.
