Effect of liquid and solid test meals on symptoms and gastric myoelectrical activity in patients with gastroparesis and functional dyspepsia. - Koch KL; Van Natta M; Parkman HP; Grover M; Abell TL; McCallum RW; Shaltout HA; Sarosiek I; Farrugia G; Shulman RJ; Tonascia J; Miriel L; et al. (Neurogastroenterology and motility, 2023)