Erratum to: Tumor Biol

DOI 10.1007/s13277-011-0156-7

The original version of this article unfortunately contained a mistake.

Hamdy E. Abouzeid and Abdel Meguid Kassem’s names have been inadvertently omitted from the author’s list.

Abdel Meguid Kassem from the Faculty of Medicine Cairo University and Hamdy E. Abouzeid, Radio-biological Applications Department, Nuclear Research Center, Atomic Energy Authority are the major contributors to the research.