inVestIgating the pSychologIcal and ecONomic impAct of cataRact surgerY in Vietnam: The VISIONARY observational study protocol

Study protocol

Beverley M Essue^*^†, Maree L Hackett^†, Andreas Mueller, Nguyen T Hanh Duc, Huynh T Phuc and Stephen Jan^†

BMC Ophthalmology 2011, 11:25 doi:10.1186/1471-2415-11-25

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