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Do Stool Form and Frequency Correlate With Whole-Gut and Colonic Transit? Results From a Multicenter Study in Constipated Individuals and Healthy Controls..Richard J Saad;Satish SC Rao;Kenneth L Koch;Braden Kuo;Henry P Parkman;Richard W McCallum;Michael D Sitrin;Gregory E Wilding;Jack R Semler;William D Chey;.The American Journal of Gastroenterology.2009,

