Question: What method was used to determine the genetic association of GFRA3 and smallpox?
Paraphrase: What strategy was utilized to decide the hereditary affiliation of GFRA3 and smallpox?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q12214 p:P2293 ?s . ?s ps:P2293 wd:Q18025811 . ?s pq:P459 ?value}