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Acta Endoscopica > 2015 > 45 > 5 > 211-216
International Journal of Colorectal Disease > 2012 > 27 > 8 > 1071-1075
Acta Endoscopica > 2015 > 45 > 5 > 211-216
International Journal of Colorectal Disease > 2012 > 27 > 8 > 1071-1075