In 2016, the World Journal of Cardiology (WJC) has published the 9^th issue which containing 6 articles contributed by scientists worldwide. Among these comprehensive articles are (1) “Novel concepts in radiation-induced cardiovascular disease”, a Review by Neal L Weintraub, MD, et al from the Department of Medicine, Medical College of Georgia at Augusta University, United States; and (2) “Depression risk in patients with coronary heart disease in Germany”, an Original Article by Karel Kostev, DMSc, PhD, Professor, et al from the Department of Epidemiology, IMS Health, Frankfurt am Main, Germany, etc. We invite you to peruse all 6 articles in this issue, as they present the latest research progress/findings and provide insightful comments in cardiology that will guide basic research and clinical practice in these fields.

This journal is an open-access journal which allows free immediate access to all full-text articles. For details, please visit: Volume 8, Issue 9, September 26, 2016.

Figure 1 The cover of the issue. Editorial Board Member of World Journal of Cardiology, Jesus Peteiro, DPhil, Doctor, Unit of Echocardiography and Department of Cardiology, Juan Canalejo Hospital, A Coruna University, 15011 A Coruna, Spain

The WJC is a leading academic journal devoted to reporting the latest, cutting-edge research progress and findings of basic research and clinical practice in the field of cardiology. It was launched on December 31, 2009 and is published monthly (12 issues annually) by BPG, the world's leading professional clinical medical journal publishing company.

We encourage cardiologists worldwide to submit manuscripts to the WJC describing their original basic or clinical research findings that are of high academic value and which report new diagnostic techniques or summarize their treatment experiences.

We invited the readers to download and read the E-Journal of this issue, athttp://www.wjgnet.com/1949-8462/e-journal.htm.