Johannes Andreas Grib Fibiger was a Danish physician and professor of anatomical pathology at the University of Copenhagen. He was the recipient of the 1926 Nobel Prize in Physiology or Medicine "for his discovery of the Spiroptera carcinoma". He claimed to have shown that the roundworm which he called Spiroptera carcinoma could cause stomach cancer in rats and mice. His experimental results were later proven to be a case of mistaken conclusion. The Nobel Prize in Physiology or Medicine 1926, announced October 27, 1927. Johannes Fibiger, “for his discovery of the Spiroptera carcinoma”. Johannes Fibiger: born 1867, Silkeborg, Denmark. Wiki link Data: the Nobel Foundation (CC0).