@article{articleda8dcff3,
title   = {Arrangement of the collagen and elastic fibers in the upper human duodenum},
author = {Mendonça, J C and Ferraz de Carvalho, Cláudio Antonio and Souza, Romeu Rodrigues de},
year = {1993},
journal   = {Revista do Hospital das Clinicas da Faculdade de Medicina da Universidade de Sao Paulo}
}