What is the {medical society} for {studied by} of {diabetes mellitus}
Which medical society studies diabetes?
 select distinct ?obj where { wd:Q12206 wdt:P2579 ?obj . ?obj wdt:P31 wd:Q19869268 } 
select distinct ?obj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q12206> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P2579> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj . ?obj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q19869268> } 
Which restorative society considers diabetes?