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Keltner JL, Johnson CA, Anderson DR, Levine RA, Fan J, Cello KE, Quigley HA, Budenz DL, Parrish RK, Kass MA, Gordon MO; Ocular Hypertension Treatment Study Group.Keltner JL, et al. Among authors: levine ra.Ophthalmology. 2006 Sep;113(9):1603-12. doi: 10.1016/j.ophtha.2006.05.061.Ophthalmology. 2006.PMID: 16949445Clinical Trial.
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