Affiliation: | a Hospital Sta Cruz, Carnaxide, Portugal b Sahlgrenska University Hospital, Goteborg, Sweden c Dresden University Hospital, Dresden, Germany d San Raffaele Hospital, Milano, Italy e Isala Klinieken, Zwolle, The Netherlands f Columbia University Medical Center, New York, NY g Hospital General Universitario de Valencia, Valencia, Spain h Policlinico S. Orsola, Bologna, Italy i North Staffordshire Royal Infirmary, Staffordshire, United Kingdom j Hospital Universitario de Valladolid, Vallodolid, Spain |