 The Palestinian National Authority cooperated with the researchers while Israel withheld formal participation.The results of the comprehensive in-depth survey, entitled " "Victims of Our Own Narratives?Portrayal of the 'Other' in Israeli and Palestinian School Books"," were announced in February 2013, in a statement signed by most members of the advisory panel, with the exceptions of several members, including Jerusalem physician Elihu Richter, who believes the method might understate Palestinian incitement, and of Arnon Groiss, who had not read the final report and also had doubts about the methodology employed.