RT Journal Article SR Electronic T1 How to use Helicobacter pylori testing in paediatric practice 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 18 OP 25 DO 10.1136/archdischild-2012-301642 VO 98 IS 1 A1 Eileen Crowley A1 Billy Bourke A1 Séamus Hussey YR 2013 UL http://ep.bmj.com/content/98/1/18.abstract AB