A patient-centered framework for health systems engineering in gastroenterology: improving inpatient colonoscopy bowel preparation oleh Alexandra T. Strauss, Jennifer Yeh, Diego A. Martinez, Gayane Yenokyan, Janet Yoder, Ravi Nehra, Tara Feller, Kathy Bull-Henry, Ellen Stein, Lawrence C. H. Hsu, Haitham Al-Grain, Candice Zabko, Christopher Fain