RT Journal Article SR Electronic T1 A 2 factor model helped to rule out early stage necrotising fasciitis JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 96 OP 96 DO 10.1136/ebm.6.3.96 VO 6 IS 3 YR 2001 UL http://ebm.bmj.com/content/6/3/96.1.abstract AB