. 2019 Jul;8(7):2173–2178. doi: 10.4103/jfmpc.jfmpc_333_19
Copyright: © 2019 Journal of Family Medicine and Primary Care
This is an open access journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms.
Figure 1.
Flow diagram of selected studies in accordance with PRISMA (2009)