[1] Thomas Jefferson Univ, Dept Med Oncol, Philadelphia, PA 19107 USA
[2] Thomas Jefferson Univ, Dept Radiat Oncol, Philadelphia, PA 19107 USA
[3] Thomas Jefferson Univ, Dept Otolaryngol, 1721 Pine St, Philadelphia, PA 19103 USA
[4] Thomas Jefferson Univ, Dept Pharmacol & Expt Therapeut, Philadelphia, PA 19107 USA
[5] Thomas Jefferson Univ, Dept Dermatol & Cutaneous Biol, Philadelphia, PA 19107 USA
[6] Thomas Jefferson Univ, Dept Neurosurg, Philadelphia, PA 19107 USA
[7] Hygeia Hosp, Med Oncol, Athens, Greece