. 2016 Jan-Mar;7(1):21–27. doi: 10.4103/2229-3485.173777
Copyright: © 2016 Perspectives in Clinical Research
This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms.
Table 1.
Characteristics of included studies
