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Utz DC, Warren MM, Gregg JA, Ludwig J, Kelalis PP.Utz DC, et al. Among authors: gregg ja.Mayo Clin Proc. 1970 Mar;45(3):161-9.Mayo Clin Proc. 1970.PMID: 5435856No abstract available.
GREGG JA, SCHIRGER A, HARRISON EG Jr.GREGG JA, et al.Proc Staff Meet Mayo Clin. 1961 Oct 11;36:550-8.Proc Staff Meet Mayo Clin. 1961.PMID: 13901612No abstract available.