From the Ospedali Riuniti di Bergamo, Bergamo; University of Pavia, Istituto Di Ricovero e Cura a Carattere Scientifico Policlinico San Matteo, Pavia; S. Bortolo Hospital, Vicenza; University of Padua, Padua; University of Florence, Florence, Italy; University of Cologne, Cologne, Germany; Medical University of Vienna, Vienna, Austria; and Mayo Clinic, Rochester, MN. (At 2011-08-10)