Developing and Assessing a Scalable Digital Health Tool for Pretest Genetic Education in Patients With Early-Onset Colorectal Cancer: Mixed Methods Design - Jessica N Rivera Rivera; Moran Snir; Emilie Simmons; Tara Schmidlen; Misha Sholeh; Melinda Leigh Maconi; Carley Geiss; Hayden Fulton; Laura Barton; Brian D Gonzalez; Jennifer Permuth; Susan Vadaparampil (JMIR Cancer)