The reference list must include all authors referred to in the text, and in the tables or legends. The accuracy of the reference list must be verified before the manuscript is submitted for publication. Identify references in the text, tables, and legends by arabic numerals in parentheses. In the text, when there are more than two authors, only the name of the first author shall be given, followed by 'et al.'. The titles of journals should be abbreviated in accordance with the style used in Index Medicus .
Some examples follow.
De Vries EGE, Kema IP, Sloof MJH, Verschuerea RCJ, Kleibeuker JH, Mulder NH, et al. Recent developments in diagnosis and treatment of metastatic carcinoid tumours. Anatomy and developmental anomalies. Pathophysiology, diagnosis, management. CBE style manual.