1. AJCC cancer staging manual,2012
2. Worldwide esophageal cancer collaboration (WECC);Rice;Dis Esophagus,2009
3. NCCN clinical practice guidelines in oncology: esophageal and esophagogastric junction cancers version 2. 2011. Available at: www.nccn.org.
4. Overview;Krasna,2009
5. Esophageal cancer;Krasna;BMJ,2012