The Royal College of Physicians in London recently announced a new online tool called "isabel" (http://www.isabel.org.uk/). It is a pediatric clinical decision-support system, named after a three-year-old girl named Isabel who had a case of necrotizing fascitis that doctors failed to properly diagnose. The free tool allows registered healthcare professionals to search established pediatric textbooks by context and meaning. A treatment regimen is outlined for each suggested illness, along with pictures and scans; and the software automatically links to any drug mentioned in the British National Formulary. The site also contains a section where health professionals can anonymously provide information about clinical situations where a diagnosis was missed, or share new information. Trials in four hospitals have found that in 95 out of 100 pediatric cases, the isabel tool came up with the correct diagnosis.