Jacqueline Boultwood, Andrea Pellagatti, Maryam Nikpour, Beena Pushkaran, Carrie Fidler, Helen Cattan, Tim J. Littlewood, Luca Malcovati, Matteo G. Della Porta, Martin Jädersten, Sally Killick, Aristoteles Giagounidis, David Bowen, Eva Hellström-Lindberg, Mario Cazzola, James S. Wainscoat
PLoS One. 2008; 3(4): e1970. Published online 2008 Apr 9. doi: 10.1371/journal.pone.0001970