In the early 1890s, Adamkiewicz published a series of articles claiming the discovery of a cancer-causing parasite he called Coccidium sarcolytus, as well as the existence of an anti-cancer serum. Further testing proved the serum a failure, and Adamkiewicz was severely criticized by the medical community at Jagiellonian University. Soon afterwards, he relocated to Vienna, where he practiced medicine at Rothschild Hospital.[2]