Hospital General Universitario Gregorio Marañón, Madrid, Spain
Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain
Hospital Universitario de Guadalajara, Guadalajara, Spain
Hospital Vega Baja, Orihuela, Alicante, Spain
Hospital Germans Triasl i Pujol, Badalona, Barcelona, Spain
Hospital Blanca Paloma, Huelva, Spain
Hospital de Basurto, Bilbao, Vizcaya, Spain
Hospital La Fe, Valencia, Spain
Hospital Ramón y Cajal, Madrid, Spain
Zentrum für klinische Forschung Clinical Trials Center, University Hospital and University Zurich, Zurich, Switzerland