Low dose capsule based 13C-urea breath test compared with the conventional 13C-urea breath test and invasive tests - Mattar, Rejane; Villares, Cibele Aparecida; Marostegam, Priscila Faria; Chaves, Cleube Esteves; Pinto, Vanusa Barbosa; Carrilho, Flair José (Arquivos de Gastroenterologia, 2014)