Review literature around care needs

[tomalrussell]

A couple of suggestions (from Boyana Buyuklieva at UCL)

• Forecasting the care needs of the older population in England over the next 20 years: estimates from the Population Ageing and Care Simulation (PACSim) modelling study https://doi.org/10.1016/S2468-2667(18)30118-X
• Using 2011 Census Data to Estimate Future Elderly Heath Care Demand http://eprints.whiterose.ac.uk/107394/1/Stephen%20Clark%20et%20al%202017%20Chapter%2023%20in%20Unlocking%20the%20Census.pdf