Nadia. M. Mohammad and Sabah M. Salih (2019) “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, 24(4), pp. 12–15. doi: 10.25130/tjps.v24i4.389.