ty -jour py -2005 da -1900/01/01 ti -pulsus Group,加拿大胃肠病学协会和WCOG SP -293234 vl -19 ab -19 ab -sn -2291-2789 ur -https:/https://doi.org/doi.org/10.1155/11.1155/2005/293234 DO -10.1155/2005/293234 JF-加拿大胃肠病学杂志PB -Pulsus Group Inc Inc KW -ER-