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It
it
Pronoun
  is
Auxiliary
  commonly
Adverb
  considered
Verb
  a
🅰️
Determiner
  gold standard   in
Adposition
  epidemiological
Adjective
  studies
Noun
  of
Adposition
  pathogenic
Adjective
  organisms
Noun
.

It is commonly considered a gold standard in epidemiological studies of pathogenic organisms.

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