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Figure 1.
Example of a page from the questionnaire.
Adelstein et al. BMC Gastroenterology 2008 8:8 doi:10.1186/1471-230X-8-8
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Resolution: standard / high Figure 1.
Example of a page from the questionnaire.
Adelstein et al. BMC Gastroenterology 2008 8:8 doi:10.1186/1471-230X-8-8 |