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Glaser AK, Voigt WH, Davis SC, Zhang R, Gladstone DJ, Pogue BW.Glaser AK, et al. Among authors: zhang r.Opt Lett. 2013 Mar 1;38(5):634-6. doi: 10.1364/OL.38.000634.Opt Lett. 2013.PMID: 23455248Free PMC article.