Truong, Phuong N. http://orcid.org/0000-0002-7879-5435
Nguyen, Thuong Vu
Nguyen, Thao Thi Thanh
Stein, Alfred
Article History
Received: 12 September 2018
Accepted: 4 July 2019
First Online: 11 July 2019
Ethics approval and consent to participate
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: The authors declare that they have no competing interests.