Text and Data Mining valid from 2018-12-01
Received: 11 May 2018
Accepted: 19 November 2018
First Online: 4 December 2018
Ethics approval and consent to participate
: The study protocol and written informed consent form were approved by the Ethic Committee of the Viet Tiep Hospital and the Institutional Review Board (IRB) of the Haiphong Medical Services (n° 01BVVT/HDKH). Then, the written informed consent was obtained from all participants before blood sampling. Privacy and confidentiality as well as the anonymity of the participants were ensured at all stages of data collection.
: Not applicable.
: The authors declare that they have no competing interests.
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