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. 2020 Mar 30;7(3):303–311. doi: 10.1093/rb/rbaa004

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© The Author(s) 2020. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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(a) SEM images of SBG and Sr-SBG; (b) DLS characterization of particle sizes of SBG and Sr-SBG; (c) EDX analysis of SBG and Sr-SBG, the inserted tables are element compositions of SBG and Sr-SBG, respectively.