Accepted for Publication: January 31, 2014.
Published Online: June 4, 2014. doi:10.1001/jamasurg.2014.535.
Study concept and design: Parvanescu, Cros, Ronot, Ruszniewski, Gaujoux.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: Parvanescu, Cros, Ronot, Grybek, Gaujoux.
Critical revision of the manuscript for important intellectual content: Cros, Ronot, Hentic, Couvelard, Levy, Chanson, Ruszniewski, Sauvanet, Gaujoux.
Statistical analysis: Parvanescu, Ronot, Gaujoux.
Obtained funding: Gaujoux.
Administrative, technical, or material support: Couvelard, Sauvanet, Gaujoux.
Study supervision: Cros, Hentic, Levy, Chanson, Ruszniewski, Sauvanet, Gaujoux.
Conflict of Interest Disclosures: None reported.
Funding/Support: Ms Parvanescu reported receiving a grant from the Société Française de Chirurgie Digestive. This work was supported in part by the Fonds d’Aide à la Recherche et à l’Evaluation from the Société Nationale Française de Gastroentérologie.
Role of the Sponsor: The funding organizations had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Additional Contributions: Agnès Linglart, MD, PhD, provided helpful discussion and technical assistance. We thank the staff of the Department of Pathology at Hôpital Beaujon and the Department of Oncogenetics at Hôpital Bichat.