Mohammad1, Nadia. M., AND Salih2, Sabah M.. " Helicobacter pylori infection Evluated by C14-urea Breath test and it`s Relation with age, sex and ABO/Rhesus blood Groups in Patients with Gastrointestinal complaints in Kirkuk City / Iraq." Tikrit Journal of Pure Science [Online], Volume 24 Number 4 (4 August 2019)