Non-urease producing Helicobacter pylori in chronic gastritis.
Ren Z, Pang G, Batey R, Routley D, Russell A, Musicka M, Dunkley M, Beagley K, Clancy R. Non-urease producing Helicobacter pylori in chronic gastritis. Aust N Z J Med. 2000 Oct; 30(5):578-84.