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APA Citation
Chen, D., Ge, J., Wang, L., Gao, Q., Ma, P., Li, N., Li, D., & Wang, Z. (2009). a simple and evolutional approach proven to recanalise the nasolacrimal duct obstruction. British journal of ophthalmology, 93(11), 1438–1443. http://access.bl.uk/ark:/81055/vdc_100137793092.0x000050