The relationship between cagA positivity and serum gastrin and TNF- alpha levels in patients with chronic active gastritis and duodenal ulcer associated with Helicobacter pylori
Mustafa YILMAZ, Ahmet AYDIN, Mehmet UNGAN, Fulya GÜNŞAR, Galip ERSÖZ, Ömer ÖZÜTEMİZ, Ulus AKARCA, Hanefi ÇAVUŞOĞLU
(Turk J Gastroenterol 1999; 10: 385-390)