RT Journal Article SR Electronic T1 Toxocara: dogwalking and playing fields JF British Journal of Sports Medicine JO Br J Sports Med FD BMJ Publishing Group Ltd and British Association of Sport and Exercise Medicine SP 6 OP 7 DO 10.1136/bjsm.35.1.6 VO 35 IS 1 A1 S Gillespie YR 2001 UL http://bjsm.bmj.com/content/35/1/6.abstract AB