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Infrared technology is used in patients' bedrooms and can monitor their breathing and pulse.

US psychiatrist and neurologist Karl Deisseroth and his German colleagues Peter Hegemann and Georg Nagel have been awarded for their work.

Early recommendations could be issued if evidence highlights patient safety risks, the chair says.

Hugo Flint-Cahan, 34, was fatally attacked by Rolando Torres-Pena, 22, at a mental health trust in east London.