1. 2009 – XXIV Assembly – Amman, Jordan (Prof. Fawzi)
2. 2010 – XXV Assembly – Vienna, Austria (Prof. Albegger & Stammberger)
3. 2011 – XXVI Assembly – Astana, Kazakhstan (Prof. Tulebaev)
4. 2012 – XXVII Assembly – Erevan (Armenia (Prof. Shukuryan)
5. 2013 – We had a meeting in Seoul, South Korea (Prof. Chong Sun Kim), but this event surprisingly had no number
6. 2014 – XXVIII Assembly – Tbilisi, Georgia (Prof. Kevanishvili, Prof. Japaridze)
7. 2015 – XXIX Assembly – Rome, Italy (Prof. Passali, Prof. Bellussi)
8. 2016 – XXX Assembly – Kajetani, Poland (Prof. Skarzynski)
9. 2017 – XXXI Assembly – Mallorca, Spain (Prof. Popp, Prof. Passali)
10. 2018 – XXXII Assembly – Antwerp, Belgium (Prof. Schmelzer)
11. 2019 – XXXIII Assembly – St Petersburg, Russia (Prof. Karpischenko)
12. 2020 – XXXIII Assembly – Udine, Italy (Prof. Piemonte)

1. 2009 – Sao Paolo, Brazil, 19th IFOS Congress
2. 2011 – Barcelona, Spain, 1st Congress of CE-ORL-HNS
3. 2013 – Seoul, South Korea, 20th IFOS Congress
4. 2015 – Prague, Czech Republic, 3rd Congress of European ORL-HNS
5. 2017 – Paris, France, 21st IFOS Congress