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Britton LC, Wilson TO, Gaffey TA, Cha SS, Wieand HS, Podratz KC.Britton LC, et al. Among authors: cha ss.Mayo Clin Proc. 1990 May;65(5):643-50. doi: 10.1016/s0025-6196(12)65126-x.Mayo Clin Proc. 1990.PMID: 2348728
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