1. Dyspepsia in England and Scotland;Jones;Gut,1990
2. The clinical benefit of routine upper gastrointestinal endoscopy;Fjosne,1986
3. Epidemiology of vomiting in early pregnancy;Klebanoff;Obstet Gynecol,1985
4. Noninvasive measurement of gastric emptying in obstetric patients;O'Sullivan;Anesth Analg,1987
5. Gastric emptying during pregnancy;Schade;Gastroenterology,1984