@inproceedings{inproceedings960f372a,
title   = {Study on pilot hole preparation and tapping on pullout pedicular screw resistan},
author = {Defino, Helton Luiz Aparecido and Shimano, Antonio Carlos and Vendrame, José Roberto Benites and Kandziora, Frank},
year = {2007},
publisher = {ISSLS},
booktitle   = {Annual Meeting of The International Society for The Study of The Lumbar Spine}
}