Who shared the Nobel Prize in Physiology or Medicine 2005 with Barry J Marshall for the discovery of the Helicobacter pylori bacterium and its role in gastritis and pepticulcer disease?

J Robin Warren

The correct answer is Option (2) - J Robin Warren

J. Robin Warren shared the Nobel Prize in Physiology or Medicine in 2005 with Barry J. Marshall for their discovery of the bacterium Helicobacter pylori and its role in gastritis and peptic ulcer disease.