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Wigal SB, Jun A, Wong AA, Stehli A, Steinberg-Epstein R, Lerner MA.Wigal SB, et al.Postgrad Med. 2010 Sep;122(5):27-34. doi: 10.3810/pgm.2010.09.2198.Postgrad Med. 2010.PMID: 20861585Clinical Trial.