@article{article938c9c28,
title   = {Mechanical performance of cylindrical and dual-core pedicle screws after repeated insertion},
author = {Defino, Helton Luiz Aparecido and Rosa, Rodrigo César and Silva, Patrícia and Shimano, Antonio Carlos and Paula, Francisco José Albuquerque de and Volpon, José Batista},
year = {2012},
doi = {10.1097/BRS.0b013e3182458c8a},
journal   = {Spine}
}