@electronic{www.nlm.nih.gov,
   title       = {Unified Medical Language System (UMLS)}, 
   url         = {http://www.nlm.nih.gov/research/umls/},
   biburl      = {https://puma.uni-kassel.de/url/4fbf3970f7410b55f406dda32b08e784/hotho},
   keywords    = {ontology SumSchool06 umls biomedicine thesaurus health},
   added-at    = {2006-06-27T13:43:24.000+0200},
   description = {},
   interhash   = {4fbf3970f7410b55f406dda32b08e784}, 
   intrahash   = {4fbf3970f7410b55f406dda32b08e784}
}