Transcatheter Heart Valve

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*Select speciality*AnaesthesiologistAngiologistCardiac surgeonCardiologistCardiothoracic surgeonDermatologistDiabetologistElectrophysiologistEndocrinologistGeneral surgeonHospital ManagerIndustryInterventional cardiologistInterventional neurologistInterventional neuroradiologistInterventional pulmonologistInterventional radiologistNephrologistNeuroradiologistNeurosurgeonNurseOrthopaedic surgeonPain management physicianPain interventionalistPodiatristPulmonologistRadiologistResearcherSpine surgeonTechnologistTransplant surgeonVascular biologistVascular physicianVascular surgeon

Which is bigger, 2 or 8?