AESKU.KIPP Institute;
Wendelsheim;
Germany;
AESKU.Diagnostics GmbH&Co.KG;
Wendelsheim;
Germany;
Division of Rheumatology;
Allergy;
and Clinical Immunology;
University of California;
Davis;
CA;
USA;
celiac disease; tissue transglutaminase; celiac neo-epitope; gluten; diagnostic marker;