Congress Gallery 20 September 30 Photos 20 September Cocktail 15 Photos 21 September Opening Ceremony Plenary Session 81 Photos 21-24 September Sessions 18 Photos 22 September Piano Concert 13 Photos 22,23 September Exhibition 40 Photos 22,23 September Poster Sessions 31 Photos 23 September Gala Dinner 140 Photos 24 September Closing Ceremony 97 Photos Catering 17 Photos Extra 147 Photos