Retrieved September 12, 2011. peds.2010-1919; published ahead of print; doi:10.1542/peds.2010-1919 Public Broadcasting Service.
Retrieved September 12, 2011. peds.2010-1919; published ahead of print; doi:10.1542/peds.2010-1919 مشارکت‌کنندگان ویکی‌پدیا.