@article{article0f21b692,
title   = {Genetic alterations in Ki-ras and Ha-ras genes in juvenile nasopharyngeal angiofibromas and head and neck cancer},
author = {Coutinho, Claudia Malheiros and Bassini, Alessandra Simoes and Gutierrez, Leonardo Guilhermino and Butugan, Ossamu and Kowalski, Luiz Paulo and Brentani, Maria Mitzi and Nagai, Maria Aparecida},
year = {1999},
doi = {10.1590/s1516-31801999000300004},
journal   = {São Paulo Medical Journal=Revista Paulista de Medicina}
}