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on, lower DDS can predict some forms of undernutrition, and vitamin deficiencies are associated with but not predictive of undernutrition.For survey researchers, physicians in the United States are a difficult-to-reach subgroup. The purpose of this study is to quantify the effect of email reminders on web-based survey response rates targeting physicians. We conducted a retrospective analysis of 11 American Board of Internal Medicine surveys from 2017 to 2019. We compute aggregate response rates for the periods between we