Some useful websites for scientists:

PubMed Database:   https://www.ncbi.nlm.nih.gov/pubmed/

https://www.who.int/hinari/en/

Endnote Reference Citation Software:  http://endnote.com/

University Library Nam Dinh Nursing: http://thuvienso.ndun.edu.vn/

Some useful references:

Document “Ebook-Tu-nghien-cuu-den-cong-bo-ky-nang-mem-cho-dental-science-hoc ” – Nguyen Van Tuan

Document “Divao-Nghien-cuu-khoa-hoc-Nguyen-Van-Tuan ” – Nguyen Van Tuan