. 2020 Feb 17;11:16. doi: 10.4103/ijpvm.IJPVM_567_18
Copyright: © 2020 International Journal of Preventive Medicine
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.
Consort flow diagram of this study