id	keyword
animalrev-4005	pylori
animalrev-4005	helicobacter
animalrev-4005	h. pylori
animalrev-4005	vol
animalrev-4005	helicobacter pylori
animalrev-4005	infection
animalrev-4005	factors
animalrev-4005	species
animalrev-4005	animal
animalrev-4005	risk
animalrev-4005	cancer
animalrev-4005	research
animalrev-4005	ehh
animalrev-4005	review
animalrev-4005	pylori infection
animalrev-4005	journal
animalrev-4005	health
animalrev-4005	study