Child soldiers who have served in the Lord's Resistance Army (LRA) rebel group, many of whom were forced to kill or watch other people being killed, may remain traumatised for years after they have been released, according to a new study. A study published by the UK-based scientific journal, the Lancet, on 13 March, has found that over half of the children surveyed - over 300, all of whom were abducted at an average age of 12 - had been seriously beaten, 77 percent had witnessed another person being killed, 39 percent had killed another person and 39 percent had abducted other children. Over one-third of the girls had been raped while 18 percent had given birth while in captivity.