1. Delayed immunisation and risk of pertussis in infants: unmatched case-control study. Issue 7394 (19th April 2003) Authors: Grant, Cameron C; Roberts, Mavis; Scragg, Robert; Stewart, Joanna; Lennon, Diana; Kivell, Denise; Ford, Rodney; Menzies, Rosalie Journal: BMJ Issue: Volume 326:Issue 7394(2003) Page Start: 852 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗