Date	Event	Description
12 May 2008	Amended	Converted to new review format.
9 April 2008	New citation required and conclusions have changed	An update search of the literature review was done using Cochrane methods on 7 November 2007. The main author (EH) ran additional searches in MEDLINE using the keywords hrt, ert, estr* and Alzheimer* or dementia in April 2008. In addition experts in the field were asked whether they had any knowledge of trials that had been published or were ongoing. Professor Asthana kindly sent us his own papers but knew of no other studies. We included two studies by Asthana et al. (2001) and Zhang et al. (2006), which was translated from Chinese. All studies which included SERMS and non‐estrogenic compounds (GH, DHEA, corticosteroids, etc.) were excluded