Timeline (WMA Meetings)
- 1964: Original version. 18th Meeting, Helsinki
- 1975: First revision. 29th Meeting, Tokyo
- 1983: Second revision. 35th Meeting, Venice
- 1989: Third revision. 41st Meeting, Hong Kong
- 1996: Fourth revision. 48th Meeting, Somerset West (SA)
- 2000: Fifth revision. 52nd Meeting, Edinburgh
- 2002: First clarification, Washington
- 2004: Second clarification, Tokyo
- 2008: Sixth revision, 59th Meeting, Seoul
Read more about this topic: Declaration Of Helsinki