Endoscopic view of ostium of nasolacrimal duct.

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@article{Yanagisawa1993EndoscopicVO, title={Endoscopic view of ostium of nasolacrimal duct.}, author={Eiji Yanagisawa and Ken Yanagisawa}, journal={Ear, nose, & throat journal}, year={1993}, volume={72 7}, pages={491-2} }