Effect of Erythromycin Before Endoscopy of Patients With Subtotal Gastrectomy (STG), High Risk of Gastric Stasis [clinicaltrials:NCT01659619]

Effect of Erythromycin Before Endoscopy of Patients With Subtotal Gastrectomy (STG), High Risk of Gastric Stasis [clinicaltrials:NCT01659619]