@article{article673c957f,
title   = {Preoperative serum levels of CA 72-4, CEA, CA-19-9 and alpha-fetoprotein in patients with gastric cancer},
author = {Mattar, R. and Andrade, C. R. A. de and DiFavero, G. M. and Rodrigues, J. J. G. and Laudanna, Antônio Atílio},
year = {2002},
journal   = {Revista do Hospital das Clínicas da Faculdade de Medicina de São Paulo}
}