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Refractive error study in children: sampling and measurement methods for a multi-country survey
A.Dominique Negrel, Eugenio Maul, Gopal P. Pokharel, Jialiang Zhao, Leon B. EllweinVolume:
129
Year:
2000
Language:
english
DOI:
10.1016/s0002-9394(99)00455-9
File:
PDF, 225 KB
english, 2000