1. Herzkathetermeßplätze, Lukaskrankenhaus-GmbH, Lethetermeßplätze, Germany.
2. CH Citadel, Cardiology Service, Liege, Belgium.
3. Medtronic International Trading Sarl, Tolochenaz, Switzerland.
4. HealthEcon Write Ltd., West Midlands, United Kingdom.
5. Electrophysiology Laboratory, Santa Marta Hospital, Lisbon, Portugal.