Endoscopic ultrasound in the evaluation of upper subepithelial lesions - Chaves, Dalton Marques; Meine, Gilmara Coelho; Moura, Diogo Turiani Hourneaux de; Matuguma, Sergio Eiji; Lera, Marcos Eduardo; Artifon, Everson Luiz de Almeida; Moura, Eduardo Guimarães Hourneaux de; Sakai, Paulo (Arquivos de Gastroenterologia, 2015)