RT Journal Article SR Electronic T1 Some risk factors for asthma 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 ep78 OP ep78 VO 89 IS 3 YR 2004 UL http://ep.bmj.com/content/89/3/ep78.abstract AB