Roggero Paola, Carissimi Emanuela, Pozzi Elena, Cataliotti Elena, Santus Francesca, Piemontese Pasquina, Grumieri Gianpaolo, Gridelli Bruno, Carnelli V
Pediatric Department, University Medical School Milan, Italy.
J Pediatr Gastroenterol Nutr. 2003 Mar;36(3):375, 396. doi: 10.1097/00005176-200303000-00014.