Accepted for Publication: January 31, 2013.
Published Online: August 28, 2013. doi:10.1001/jamasurg.2013.3376.
Study concept and design: Partelli, Gaujoux, Boninsegna, Scarpa, Sauvanet, Falconi.
Acquisition of data: Partelli, Gaujoux, Boninsegna, Cherif, Scarpa, Ruszniewski, Sauvanet.
Analysis and interpretation of data: Gaujoux, Boninsegna, Crippa, Couvelard, Scarpa, Ruszniewski.
Drafting of the manuscript: Partelli, Boninsegna, Scarpa, Ruszniewski.
Critical revision of the manuscript for important intellectual content: Partelli, Gaujoux, Cherif, Crippa, Couvelard, Scarpa, Ruszniewski, Falconi.
Statistical analysis: Partelli, Boninsegna.
Administrative, technical, or material support: Gaujoux, Couvelard.
Study supervision: Gaujoux, Crippa, Ruszniewski, Sauvanet, Falconi.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported in part by grant FIRB RBAP10AHJB from the Italian Cancer Genome Project (Drs Scarpa and Falconi).
Previous Presentation: This study was presented in part at the North America Neuroendocrine Tumor Society (NANETS); October 20, 2011; Minneapolis, Minnesota, and at the Ninth Meeting of the European Neuroendocrine Tumor Society (ENETS); March 9, 2012; Copenhagen, Denmark.