The circulation journal in the world.

On behalf of the editorial team of the Circulation Journal, the official journal of the Japanese Circulation Society (JCS), I am pleased to report that the scientific and internationalization levels are steadily increasing. The JCS should represent not only Japan but also countries in Asia and Pacific regions. This would make the position of the Circulation Journal in this region equivalent to that of Circulation, published by the American Heart Association (AHA), in America and European Heart Journal, published by the European Society of Cardiology (ESC), in Europe (Figure 1). Indeed, the goal of our editorial team is to enhance the scientific and internationalization levels of the Circulation Journal.