Clinical outcomes and prognostic factors in patients with spinal dural arteriovenous fistulas : a prospective cohort study in two Chinese centres - Ma, Y., Chen, S., Peng, C., Wang, C., Li, G., He, C., Ye, M., Hong, T., Bian, L., Liu, J., Wang, Z., Qureshi, A. I., Ling, F., Zhang, H. (BMJ Publishing, 2018)
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