1. Development of the human gastrointestinal tract: Twenty years of progress;Montgomery;Gastroenterology,1999
2. Human Embryology;Keibel,1912
3. Anomalies of Intestinal Rotation and Fixation;Estrada,1958
4. Rotation of the gut: Fact or fantasy?;Kluth;J Pediatr Surg,1995
5. Development of the human gastrointestinal tract: A review;Grand;Gastroenterology,1976