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Tan NW, Saw SM, Lam DS, Cheng HM, Rajan U, Chew SJ.Tan NW, et al. Among authors: saw sm.Optom Vis Sci. 2000 Sep;77(9):465-72. doi: 10.1097/00006324-200009000-00007.Optom Vis Sci. 2000.PMID: 11014673Clinical Trial.
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