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The ethical committee of the DMCH approved the research protocol and gave ethical permission (reference no: MEU-DMC\/ECC\/2016\/160).","order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Compliance with Ethical Standards"}},{"value":"The authors declare that they have no conflict of interest.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of Interest"}}]}}