TY  - JOUR
TI  - How to determine margins for planning target volume (PTV): from 2D to 3D planning in radiotherapy for head and neck cancer? Portal imaging assessment for set-up errors
AU  - Evrim BAYMAN, 
JO  - Turk J Oncol
PY  - 2010
VL  - 25
SP  - 104
EP  - 110
DO  - 
ER  -