RT Journal Article SR Electronic T1 Answers From questions on page 196 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 204 OP 204 DO 10.1136/adc.2010.197335a VO 95 IS 6 A1 Helen Williams YR 2010 UL http://ep.bmj.com/content/95/6/204.abstract AB