Their work has stimulated research into microbes as possible reasons for other chronic inflammatory conditions, such as Crohn's disease, ulcerative colitis, rheumatoid arthritis and atherosclerosis, the Nobel assembly said.
The Nobel assembly is the narrator
It states at the end that "the Nobel assembly said" inplying they are the narrators of this statement
( z1 person :ARG0-of ( z2 narrate ) :domain ( z3 assembly :mod ( z4 award :name ( z5 name :op "Nobel" ) ) ) )