[1] Univ Texas Hlth Sci Ctr San Antonio, San Antonio, TX USA
[2] Humboldt Univ, Charite, Campus Virchow Klinikum, Berlin, Germany
[3] Univ S Florida, H Lee Moffitt Canc Ctr, Tampa, FL 33620 USA
[4] Vrije Univ Amsterdam Med Ctr, Amsterdam, Netherlands
[5] Univ Roma La Sapienza, I-00185 Rome, Italy
[6] Novartis, E Hanover, NJ USA
[7] Univ Texas MD Anderson Canc Ctr Houston, Houston, TX USA