RT Journal Article SR Electronic T1 Pertussis in a four-week old baby. JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 218 OP 218 VO 45 IS 393 A1 E S Mucklow A1 K Cooney A1 S S Namnyak YR 1995 UL http://bjgp.org/content/45/393/218.1.abstract AB