Vancouver citation is widely used by biomedical, health science and other science students. The following paragraphs are extracted from:
Chiu, AS, Yip, H. From CM to TCM: A case study of the Tung Wah Hospital in Hong Kong since 1870. 14th International Conference on the History of Science in East Asia; 2015 July 6-10; Paris.
Use one citation style form consistently throughout a paper or thesis. For example, you mention a journal article, an e-book, and a journal article published online ahead of print as follows. All the in-text citations and bibliographies are in Vancouver style.