Section of Gastroenterology;
Department of Medical Sciences;
University of Foggia;
Gastroenterology and Digestive Endoscopy;
'Nuovo Regina Margherita' Hospital;
Helicobacter; pylori; Clarithromycin; Metronidazole; Levofloxacin; Amoxicillin; Tetracycline; Resistance; Antibiotic; Point; mutation;