@article{articlec8c89bc7,
title   = {Comparison of techniques for extracting viral RNA from isolation-negative serum for},
author = {Paula, Sérgio Oliveira de and Nunes, Camila and Matos, Rosemary and Oliveira, Zilda Machado de and Lima, Danielle Malta and Fonseca, Benedito Antonio Lopes da},
year = {2001},
journal   = {Journal of Virological Methods}
}