?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.date=2002&rft.isbn=0854840842&rft.btitle=Peptic+ulcer%3A+rise+and+fall&rft.tpages=156&rft.genre=book