Serological immunoglobulin G antibody titers to helicobacter pylori in japanese brazilian and non-japaneze brazilian gastric cancer patients and controls in São Paulo - Fujioka, Naoko; Fahey, Thomas; Hamada, Gerson Shigeaki; Nishimoto, Inês Nobuko; Kowalski, Luiz Paulo; Iriya, Kiyoshi; Gama Rodrigues, Joaquim José; Tajiri, Hisao; Tsugane, Schoichiro (Japanese Journal of Cancer Research, 2001)