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Casaclang-Verzosa G, McCully RB, Oh JK, Miller FA Jr, McGregor CG.Casaclang-Verzosa G, et al. Among authors: mcgregor cg.Mayo Clin Proc. 2006 Jun;81(6):777-82. doi: 10.4065/81.6.777.Mayo Clin Proc. 2006.PMID: 16770978Clinical Trial.