Lee JY, Kim N, Yoon H, Shin CM, Park YS, Lee DH.  A Randomized, Double-blinded, Placebo-controlled Study to Evaluate the Efficacy and Safety of DA-9701 (Motilitone) in Patients With Constipation-type Irritable Bowel Syndrome and Functional Dyspepsia Overlap: A Pilot Study.  J Neurogastroenterol Motil 2022;28:265-275.  https://doi.org/10.5056/jnm20236