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Effectiveness of ophthalmic solution preservatives: a comparison of latanoprost with 0.02% benzalkonium chloride and travoprost with the sofZia preservative system

Gerard Ryan*, Joel M Fain, Cherie Lovelace and Karl M Gelotte

BMC Ophthalmology 2011, 11:8  doi:10.1186/1471-2415-11-8