TY  - JOUR 
T1  - Risk and radiation exposure in orthopedic surgery of the spine in
               Mexico
JO  - Coluna/Columna
A1  - Noriega, Fernando Ivan Zaragoza
A1  - Hirotani, Fernando Hiramuro
SN  - 1808-1851
UL  - 10.1590/S1808-1851201514010R126
VL  - 14 
Y1  - 2015
PB  - Brasil 
ER  -