We will thereby eventually get what few thought possible: more and better health care at lower cost.

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Mr Miliband claimed the PM's promises to modernise the NHS were "coming back to haunt him", and suggested Mr Cameron thought he "knew better" than the doctors and nurses who "devote their lives to the health service".

BBC: Miliband urges PM to drop 'disastrous' NHS bill

Later on, Greg Gilbert of Merrill Lynch asked if Read thought that having both the established products and branded medicines could help Pfizer negotiate better with health plans and governments.

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These women tend to be better educated, more interested in health and from the higher socio-economic classes - all factors thought to reduce the risk of dementia.

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