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Walker LE, Heaton HA, Monroe RJ, Reichard RR, Kendall M, Mullan AF, Goyal DG.Walker LE, et al. Among authors: mullan af.Mayo Clin Proc. 2020 Nov;95(11):2395-2407. doi: 10.1016/j.mayocp.2020.09.019. Epub 2020 Sep 19.Mayo Clin Proc. 2020.PMID: 33153630Free PMC article.