Ultra-short celiac disease exhibits differential genetic and immunophenotypic features compared to conventional celiac disease Pilar Mata-Romero; Daniel Martín-Holgado; Hal C. Ferreira-Nossa; Pedro L. González-Cordero; Ana Izquierdo-Martín; Patricia Barros-García; Nuria Fernandez-Gonzalez; Luis Fernández-Pereira; Carmen Cámara-Hijón; Javier Molina-Infante;