Research Article
Association of Helicobacter pylori Infection with Seasonal Behavior of Duodenal Ulcer
Hossein Khedmat,
Mohsen Amini,
Amir Masoud Jafari,
Farhad Nasiri Afshar,
Morteza Izadi,
Hamid Reza Jalalian,
Farahnaz Fallahian,
Mohammad Hassan Naseri and Mahboobeh Sadat Hosseini