Figure 1.

Flow diagram of the search strategy used to identify articles for inclusion in the systematic reviewon source attribution of human campylobacteriosis using multilocus sequence typing, since January 2001

MLST: multilocus sequence typing.

^a The search terms were broad and brought in diverse articles with a very diverse corresponding set of reasons for exclusion, including articles that had no relation with source attribution as well as those using other approaches. No useful summary of this diversity was possible.