References for Glu-21 minimal epitope in considered native form

• Vader W, Kooy Y, Van Veelen P, De Ru A, Harris D, Benckhuijsen W, Pe�a S, Mearin L, Drijfhout JW, Koning F.
  The gluten response in children with celiac disease is directed toward multiple gliadin and glutenin peptides.
  Gastroenterology. 2002;122:1729-1737.
  pubmedID: 12055577