AmoxicillinAmoxicillin-Potassium Clavulanate CombinationAnti-Bacterial AgentsPenicillinsClavulanic AcidClarithromycinClavulanic AcidsMetronidazoleMicrobial Sensitivity TestsHelicobacter pyloriHelicobacter InfectionsDrug Therapy, CombinationOmeprazole2-PyridinylmethylsulfinylbenzimidazolesAmpicillinPenicillin ResistanceOtitis MediaAnti-Ulcer AgentsDrug Resistance, BacterialStreptococcus pneumoniaeLansoprazoleFurazolidoneRabeprazolebeta-LactamsBismuth