1. Dana-Farber Cancer Institute, Boston, MA; Mayo Clinic, Rochester, MN; University of Pittsburgh, Pittsburgh, PA; Hôpital Saint Antoine, Paris, France; University of Leuven, Leuven, Belgium; Allegheny General Hospital, Allegheny Cancer Center, Pittsburgh, PA; St James's University Hospital, Leeds, United Kingdom; Memorial Sloan-Kettering Cancer Center, New York, NY; Mayo Clinic, Rochester, MN