1. Plummer-Vinson or Paterson-Brown Kelly Priority, Precedence or Prestige?
2. 3. M. H. Sleisenger, and J. S. Fordtran, Gastrointestinal Diseases . W. B. Saunders, Philadelphia, 1989 ; 632 .
3. 4. T. Yamada, Textbook of Gastroenterology . Lippincott, Philadelphia, 1991 ; 1706 .
4. 5. M. Paulson, Gastroenterologic Medicine . Lea and Febiger, Philadelphia, 1969 ; 674 -5 .