WASHINGTON (CNN) -- Former terrorist suspects detained by the United States were tortured, according to medical examinations detailed in a report released Wednesday by a human rights group. The Massachusetts-based Physicians for Human Rights reached that conclusion after two-day clinical evaluations of 11 former detainees, who had been held at the Abu Ghraib prison in Iraq, at Guantanamo Bay, Cuba, and in Afghanistan. The detainees were never charged with crimes. "We found clear physical and psychological evidence of torture and abuse, often causing lasting suffering," said Dr. Allen Keller, a medical evaluator for the study. In a 121-page report, the doctors' group said that it uncovered medical evidence of torture, including beatings, electric shock, sleep deprivation, sexual humiliation, sodomy and scores of other abuses. The report is prefaced by retired U.S. Major Gen. Antonio Taguba, who led the Army's investigation into the Abu Ghraib prisoner abuse scandal in