*School of Medicine, University of Tampere, and the Department of Gastroenterology and Alimentary Tract Surgery, Tampere University Hospital, Tampere, Finland
†Pediatric Research Center, University of Tampere and Tampere University Hospital, Tampere, Finland.
Address correspondence and reprint requests to Katri Kaukinen, MD, PhD, University of Tampere, School of Medicine, FIN-33014, Tampere, Finland (e-mail: firstname.lastname@example.org).
Received 15 February, 2012
Accepted 17 February, 2012
The authors report no conflicts of interest.