An article in The Scientist reports that a leading cancer hospital in Norway has begun to investigate all the research conducted by one of its top scientists, Jon Sudbo, after claims emerged that he had invented more than 900 individuals, who served as the basis for a Lancet paper published on October 15, 2005. The study was an analysis of data from a population-based database, and found that long-term use of NSAIDs was associated with a lower risk of oral cancer (even in active smokers), but a higher risk of death from cardiovascular disease. Management at the hospital's Cancer Clinic has secured all data from his previous research for the purposes of the investigation.