002] identified correlate with treatment failure involving other drugs against the same virus"                                                                                                
#&gt; 
#&gt; $extension_domain
#&gt; $extension_domain$fhir_extension
#&gt; $extension_domain$fhir_extension$fhir_endpoint
#&gt; [1] "https://fhirtest.uhn.ca/baseDstu3"
#&gt; 
#&gt; $extension_domain$fhir_extension$fhir_version
#&gt; [1] "3"
#&gt; 
#&gt; $extension_domain$fhir_extension$fhir_resources
#&gt; $extension_d