Hi would you be able to create an independent style which follows the example below? It seems like a newer style of JDR?

For citation:
Arrange the citations in alphabetical order by last name of the first author without numbering. Use "et al." (in italics) when the cited work is by three or more authors. When the cited work is by two authors, use both surnames separated by "and". When citing multiple references by the same author(s) in the same year, use "a", "b", etc. (e.g., Jones, 1980b). Multiple references should be listed in chronological order of publication, separated by semi-colons.

For bibliography:
(List all authors, but if the number exceeds six, give six authors’
names followed by et al.) West DJ, Snavely DB, Zajac BA, Brown GW, Babb CJ (1990).
Development and persistence of antibody in a high-risk institutionalized population given plasma-derived hepatitis B vaccine. Vaccine 8:111-114.

Abbreviate journal names according to the style used in Index Medicus.

Journal names should be in italics. No DOI.

Thank you!