*Medical Oncology Branch, National Cancer Institute, Bethesda, MD.
Marcello Tiseo, MD, PhD is currently affiliated with the Medical Oncology Unit, University Hospital, Parma, Italy.
Disclosure: The authors declare no conflict of interest.
Address for correspondence: Giuseppe Giaccone, MD, PhD, Chief, Medical Oncology Branch, National Cancer Institute, 12N/226, 10 Center Drive, Bethesda, MD 20892. E-mail: email@example.com