@article{article760d4356,
title   = {Duodenal ulcer coexisting with gastric cancer: clinical and endoscopic trends},
author = {Macedo, T M and Sakai, P and Ishioka, S and Silva, L P S and Gama Rodrigues, Joaquim José and Pinotti, Henrique Walter},
year = {1987},
journal   = {Abcd: Arquivos Brasileiros de Cirurgia Digestiva}
}