Long learning curve for surgeons operating on esophageal cancer

Esophageal cancer is the eighth most frequently diagnosed cancer worldwide and the sixth most common cause of cancer-related death. The curatively intended treatment usually includes extensive surgery with removal of most of the esophagus (food-pipe) and the upper part of the stomach. The procedure is time-consuming and complex.
http://atlasofscience.org/long-learning-curve-for-surgeons-operating-on-esophageal-cancer/