A national nudge study of differently framed messages to increase COVID-19 vaccine uptake in Saudi Arabia: A randomized controlled trial by Mohammed Alhajji, Abdullah H. Alzeer, Rami Al-Jafar, Reem Alshehri, Saad Alyahya, Sara Alsuhaibani, Sarah Alkhudair, Raghad Aldhahiri, Ahmed Alhomaid, Dalal Alali, Abdulelah Alothman, Eman Alkhulaifi, Mohammed Alnashar, Abdulrahman Alalmaee, Ibrahem Aljenaidel, Fahad Alsaawi

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