Zhou, Z., Congdon, N. G., Zhang, M., Chen, L., Zheng, Z., Zhang, L., . . . Lam, D. S. (2007). Distribution and visual impact of postoperative refractive error after cataract surgery in rural China: Study of Cataract Outcomes and Up-Take of Services report 4. Journal of Cataract & Refractive Surgery, 33(12), 2083-2090. https://doi.org/10.1016/j.jcrs.2007.07.040

Zhou, Zhongxia, et al. "Distribution and Visual Impact of Postoperative Refractive Error After Cataract Surgery in Rural China: Study of Cataract Outcomes and Up-Take of Services Report 4." Journal of Cataract & Refractive Surgery 33, no. 12 (2007): 2083-2090. https://doi.org/10.1016/j.jcrs.2007.07.040.

Zhou, Zhongxia, et al. "Distribution and Visual Impact of Postoperative Refractive Error After Cataract Surgery in Rural China: Study of Cataract Outcomes and Up-Take of Services Report 4." Journal of Cataract & Refractive Surgery, vol. 33, no. 12, 2007, pp. 2083-2090, https://doi.org/10.1016/j.jcrs.2007.07.040.