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APA Citation
Columbo, J. A., Zwolak, R. M., Arous, E. J., Goodney, P. P., Lilly, M. P., & Welch, H. G. (2020). variation in Ultrasound Diagnostic Thresholds for Carotid Stenosis in the United States. Circulation, 141(12), . http://access.bl.uk/ark:/81055/vdc_100105909211.0x000052