[1] Temple Univ, Sbarro Inst Canc Res & Mol Med, Coll Sci & Technol, Ctr Biotechnol, Philadelphia, PA 19122 USA
[2] Human Hlth Fdn, Terni, PG, Italy
[3] Human Hlth Fdn, Spoleto, PG, Italy
[4] Natl Canc Inst IRCCS Aviano, Aviano, Italy
[5] Univ Siena, Dept Human Pathol & Oncol, I-53100 Siena, Italy