If you want to update the journal to 4 issues per year (Quarterly), here's the revised version:

The Journal of Modern Medical Science (JMMS) is published Quarterly, with four issues per year.

Publication Schedule

• Issue 1: January – March

• Issue 2: April – June

• Issue 3: July – September

• Issue 4: October – December

Continuous Online Publication

Accepted manuscripts are published online after successful peer review, editorial processing, and final acceptance. Articles are subsequently assigned to the next available issue.

Special Issues

The journal may publish special issues or supplementary editions on emerging topics of medical and healthcare importance when deemed appropriate by the Editorial Board.

JMMS is committed to ensuring the timely publication of high-quality, peer-reviewed research while maintaining the highest standards of academic excellence and publication ethics.

If needed, I can also make it sound more formal to match international journal publishing standards.