Generally, an article can have an issue number about 1-2 months after its publication. If you need to publish SCI papers, you can consult the Medical Park.

The volume number is based on the year, which is the first volume from the year when the journal was founded. For example, if a periodical was founded in 20 14, the periodical published in 20 14 is the first volume, and the periodical published in 20 15 is the second volume.

Features of doi:

Foreign digital document manufacturers used unique identifiers to identify their published electronic documents earlier, and formed many identifier schemes applied in different environments. For example, continuous entries and contribution identifiers of continuous publications and their single documents, unique identifiers of books and content fragments (chapters, preface, indexes and paragraphs) in books, publisher entry identifiers PII, etc.