Dear Authors and Friends of Endokrynologia Polska,

After many years of free open access, owners of The Journal have decided to introduce Author Publication Charge (APC) to support its stability and further development in ever-changing environment of scientific publishing.

Article Publication Fee is 250.00 EUR; 125.00 EUR for members of the Polish Society of Endocrinology (Polskie Towarzystwo Endokrynologiczne). The Article Publication Fee will be required after acceptance for publication.

It will introduced on February 15^th, 2019 and will refer to all unsolicited papers accepted for publication.

We hope for your understanding and continued co-operation with our Journal.

The Editors of "Endokrynologia Polska"