premise: In Norway, the Oslo and Akershus County Medical Officer has announced that it is launching an inquiry into a possible scientific hoax, involving cancer researchers from Norway, the U.S. and Finland. In October 2005, the Norwegian researcher Jon Sudbø along with 13 co-authors published the study in the prestigious medical journal The Lancet. The study claimed to detect a positive effect of ibuprofen in preventing oral cancer in smokers, based on a controlled case-study, entailing several hundred patients. On the basis of this study, a broader prospective multicenter study was to be started in 2006, partly funded by the U.S. National Cancer Institute.
hypothesis: Cancer researchers from Finland collaborate with researchers from Norway and the U.S.