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QUESTION
Articles
Here are the links or the articles
http://www.nepjol.info/index.php/JoNMC/article/viewFile/7296/5912
http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0117999&type=printable
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4803976/
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0078412
The other 2 article are attaced
