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. 2017 Aug 7;17:524. doi: 10.1186/s12885-017-3516-x

Fig. 1.

Fig. 1

Flowchart of the study. 1Corresponding to individuals involved in the cluster randomized controlled trial Colo-alert (see reference [19]). 2Colonoscopy performed in the last five years or faecal occult blood test in the last two years. BCCSP: Colorectal Cancer Screening Programme of Barcelona