@article{articleed46c54a,
title   = {The effect of repetitive pilot-hole use on the insertion torque and pullout strength of vertebral system screws},
author = {Defino, Helton Luiz Aparecido and Rosa, Rodrigo César and Silva, Patrícia and Shimano, Antonio Carlos and Volpon, Jose Batista and Paula, Francisco Jose Albuquerque de and Schleicher, Philipp and Schnake, Klaus and Kandziora, Frank},
year = {2009},
journal   = {Spine}
}