“I was shy to share with my doctor about decrease of sexual activity which I occurred for the last couple of years. He advised me Viagra which could realize my sexual drive and fantasies. A feel alive again! Viagra saved me!”

“It is not fair that everybody knows about Viagra, Levitra worked perfectly for me and moreover it is less expensive and easier to find. I almost have not experienced any side effects, at least those severe to make sex impossible. Works like a charm.”

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.