Physikalisch Technische Bundesanstalt (PTB), Braunschweig and Berlin, Germany
Instituto Nazionale di Ricerca Metrologica (INRiM), Torino, Italy
National Physics Laboratory (NPL) Management Limited, London, United Kingdom
Istituto Ortopedico Rizzoli, Bologna, Italy
ZMT Zurich MedTech AG, Zurich, Switzerland