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This research received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors. This research received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors. The hospital ethics committee (<i>ULS S\u00e3o Jos\u00e9<\/i>) approved the study protocol. All participants provided written informed consent and all procedures carried out in this study were conducted according to the Declaration of Helsinki guidelines. The data base used and analysed during the current study is available from the corresponding author on reasonable request. All authors read and approved the final manuscript.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"16"}}