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Scientific Reports 6: Article number: 26639 10.1038/srep26639; published online: May 24 2016; updated: June 01 2018
This Article has been retracted by Scientific Reports at the request of Nanyang Technological University. An investigation at Nanyang Technological University found that ethical approval for the reported experiments was not sought from their Internal Review Board.
The Authors do not agree with the Retraction.
