A testimonial consists of a person's written or spoken statement extolling the virtue of a service

"Congratulations with splendid lectures and perfect organisation" (Frederic Haven)

"Overall good to excellent conference - Good scientific content" (Geert Vanderschueren)

"Go on with this nice symposium - Good speakers - Perfect organisation - Congratulations" (Eric Bijnens)

"It was one of my best congresses I've ever joint in the last 20 years of my career - Thank you very much for this!" (Thomas Grieser)