Manuscripts of articles, technical notes and letters-to-the-editor should be submitted to the Editor-in-Chief. Copies articles on specific topics listed above should also be submitted to the respective Scientific Editor. Manuscripts are refereed by at least two referees and are reviewed by the Editor-in-Chief before acceptance. On acceptance, revised articles, brief biographies and photographs of authors should be submitted to the Managing Editor by Express mail. Manuscripts of articles must be prepared in strict accordance with the author instructions. No honorarium is paid for articles.