Research into cot death syndrome has been held up for more than 20 years by a scientific error that may have cost hundreds of lives. Much of the research into sudden infant death syndrome (SIDS) has stemmed from a research paper based on one family who had five children who died from unexplained circumstances. The deaths turned out to have been caused by the children's mother, who suffered from Munchausen's Syndrome By Proxy. The condition means people enjoy the attention from nurses and doctors when their children get ill. This leads them to fake or induce the symptoms to keep the doctors' attention.