POLIS: a rapid and replicable screening tool to improve risk stratification of potential false-negative COVID-19 patients Free Eng Chuan Foo1, http://orcid.org/0000-0003-2402-8289Anli Yue Zhou2, Oliver Lily1 1 Leeds Centre for Neurosciences, Leeds Teaching Hospitals NHS Trust, Leeds, UK 2 The Centre for Occupational and Environmental Health, The University of Manchester, Manchester, UK Correspondence to Eng Chuan Foo, Department of Neurology, Leeds Centre for Neurosciences, Leeds General...