Authors: Claudio Marcocci; George J Kahaly; Gerasimos E Krassas; Luigi Bartalena; Mark Prummel; Matthias Stahl; Maria Antonietta Altea; Marco Nardi; Susanne Pitz; Kostas Boboridis; Paolo Sivelli; George von Arx; Maarten P Mourits; Lelio Baldeschi; Walter Bencivelli; Wilmar Wiersinga Journal: N Engl J Med Date: 2011-05-19 Impact factor: 91.245