RT Journal Article SR Electronic T1 How to adjust for case-mix when comparing outcomes across healthcare providers JF Archives of disease in childhood - Education & practice edition JO Arch Dis Child Educ Pract Ed FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 70 OP 71 DO 10.1136/archdischild-2013-303940 VO 99 IS 2 A1 Shalini Santhakumaran YR 2014 UL http://ep.bmj.com/content/99/2/70.abstract AB