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Ivarsen A, Hjortdal J.Ivarsen A, et al. Among authors: hjortdal j.Cornea. 2013 Jul;32(7):903-6. doi: 10.1097/ICO.0b013e31828321dd.Cornea. 2013.PMID: 23449485
Ehlers N, Hjortdal J.Ehlers N, et al. Among authors: hjortdal j.Acta Ophthalmol. 2008 Aug;86(5):549-51. doi: 10.1111/j.1600-0420.2007.01085.x. Epub 2008 Jun 4.Acta Ophthalmol. 2008.PMID: 18537929Free article.
Ivarsen A, Fledelius W, Hjortdal JØ.Ivarsen A, et al.Invest Ophthalmol Vis Sci. 2009 May;50(5):2061-6. doi: 10.1167/iovs.08-2853. Epub 2009 Jan 17.Invest Ophthalmol Vis Sci. 2009.PMID: 19151379Clinical Trial.