About WOTHERSPOON A C
About Univ. Coll. and Middlesex School of Medicine, London, GBR
About ORTIZ-HIDALGO C
About Univ. Coll. and Middlesex School of Medicine, London, GBR
About FALZON M R
About Univ. Coll. and Middlesex School of Medicine, London, GBR
About ISAACSON P G
About Univ. Coll. and Middlesex School of Medicine, London, GBR
About Lancet
About Helicobacter