A National Nudge Study of Different Framed Message to Increase COVID-19 Vaccine Uptake in Saudi Arabia: A Randomized Controlled Trail. - Mohammed Alhajji; Abdullah H. Alzeer; Saad Alyahya; Sara Alsuhaibani; Sarah Alkhudair; Raghad Aldhahiri; Ahmed Alhomaid; Dalal Alali; Abdulelah Alothman; Eman Alkhulaifi; Mohammed Alnashar; Abdulrahman Alalmaee; et al. (AMIA, 2022)