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. 2019 Nov 14;9(11):e030629. doi: 10.1136/bmjopen-2019-030629

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© Author(s) (or their employer(s)) 2019. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

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Spatial distributions of rates of LBW, in Guangdong province, China, from 1 January 2014 to 31 December 2017. (A) Spatial distributions of LBW rates in 2014. (B) Spatial distributions of LBW rates in 2015. (C) Spatial distributions of LBW rates in 2016. (D) Spatial distributions of LBW rates in 2017. LBW, low birth weight.