US government doctors who cared for the prisoners at Guantanamo Bay deliberately concealed or ignored evidence that their patients were being tortured, the first official study of its kind has found. A detailed review of the medical records and case files of nine Guantanamo inmates has concluded that medical personnel at the US detention centre were complicit in suppressing evidence that would demonstrate systematic torture of the inmates. The review is published in an online scientific journal, PLoS Medicine, and is the first peer-reviewed study analysing the behaviour of the doctors in charge of Guantanamo inmates who were subjected to "enhanced interrogation" techniques that a decade ago had been classed by the US government as torture. [The report] concluded that no doctor could have failed to notice the medical signs and symptoms of the extreme interrogation techniques and unauthorised assaults that other physicians would recognise as torture, such as severe beatings resulting in bone fractures, sexual assaults, mock executions, and simulated drowning by "waterboarding". Many of the prisoners said they were also subjected to unauthorised abuses resulting in severe and prolonged physical and mental pain.