RT Journal Article SR Electronic T1 Protracted measles. JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 163 OP 163 DO 10.1136/adc.48.2.163-d VO 48 IS 2 A1 H B Marsden YR 1973 UL http://adc.bmj.com/content/48/2/163.2.abstract AB