Erythromycin, 200 mg Intravenously over 15 Minutes, Followed by Ingestion of a Radioactive-Labeled Meal (Scrambled Egg, Toast, and Water) Resulted in More Rapid Emptying of Solids and Liquids (IV Solids and IV Liquids) in Patients With Diabetic Gastroparesis (A) and Patients Without Diabetes (B) Compared With Gastric Emptying Times in the Absence of Erythromycin (Basal Solids and Basal Liquids) i