"IIa: mildly ill"
"IIb: moderately ill"
"IIIa: shock"
"IIIb: perforation"
"The modified Bell's staging is as follows 1-3:"
"stage I (suspected NEC)"
"stage II (confirmed NEC)"
"stage III (progressive NEC)"
"Bell's staging of necrotising enterocolitis is based on both clinical and radiological data; it is sometimes known as the modified Bell's staging."
"History and etymology"