Authors: Preciosa M Coloma; Martijn J Schuemie; Gianluca Trifirò; Laura Furlong; Erik van Mulligen; Anna Bauer-Mehren; Paul Avillach; Jan Kors; Ferran Sanz; Jordi Mestres; José Luis Oliveira; Scott Boyer; Ernst Ahlberg Helgee; Mariam Molokhia; Justin Matthews; David Prieto-Merino; Rosa Gini; Ron Herings; Giampiero Mazzaglia; Gino Picelli; Lorenza Scotti; Lars Pedersen; Johan van der Lei; Miriam Sturkenboom Journal: PLoS One Date: 2013-08-28 Impact factor: 3.240