1. Academy of Medical Sciences: Rejuvenating ageing research. 2009, London: Academy of Medical Sciences
2. European Commission: Meeting social needs in an ageing society. 2008, Luxembourg
3. House of Lords Science and Technology Committee: Ageing: scientific aspects. 2005, London: The Stationery Office
4. The Economist: Healthcare strategies for an ageing society. 2009, The Economist Intelligence Unit
5. Miller R, Wright D: Detecting and correcting attrition bias in longitudinal family research. J Marriage Fam. 1995, 57: 921-929. 10.2307/353412.