Before February 2010, it was pointed out that the reliability of methods to assess the age of death for mummies in general was uncertain. For these reasons the correctness of the age estimates was repeatedly called into question. Several studies estimated the mummy to be of a man who died around age 25–26; beside Smith, Douglas E. Derry and Ronald G. Harrison both came to this conclusion. John R. Harris in the late 1980s offered 35 years as its age, while Joyce Filer in the early 2000s suggested early 20s. Elsewhere, an analysis of the skeletal remains based on dentition and X-rays of the long bones indicated 35 years. Finally, examinations using CT scans from the late 2000s, published in 2010 and 2016, showed the mummy to have died between age 35–45, which the examiners believe supports the theory that the mummy is Akhenaten's. The archaeological, inscriptional, and now genetic evidence indicate that the ancient Egyptians who buried (and later desecrated) the body in KV55 believed this to be Akhenaten's. However, a number of experts dispute these findings, claiming that Hawass et al. have not provided sufficient evidence to assume the older age at death.