query: ##defaultView:BubbleChart
  #Most cited journals that have published articles on Zika virus or Zika fever
  SELECT ?journal ?journalLabel (COUNT(DISTINCT ?paper) AS ?count)
  WHERE
  {
      ?item wdt:P2860 ?paper .
    { ?paper wdt:P921 wd:Q202864 . } UNION { ?paper wdt:P921 wd:Q8071861 . }  
      ?paper wdt:P31 wd:Q13442814 .
      ?paper wdt:P1433 ?journal .
      SERVICE wikibase:label {
          bd:serviceParam wikibase:language "en" .
      }
  }
  GROUP BY ?journal ?journalLabel
  ORDER BY DESC(?count)