Chronic Constipation and IBS‐C Treatment and Outcomes Real World Research Platform (CONTOR): A Large, Longitudinal Observational Study: 563. (October 2016) - Abel, Jessica L.; Taylor, Douglas C.A.; Doshi, Jalpa A.; Martin, Carolyn; Hunter, Alyssa Goolsby; Essoi, Breanna; Buzinec, Paul; Carson, Robyn T.; Reasner, David S.; Spiegel, Brennan; Chey, William D.